Neuroma, Acoustic
Neoplasms, Post-Traumatic
Peripheral Nervous System Neoplasms
Diathermy
Acoustic Maculae
Metatarsalgia
Temporal Bone
Postoperative magnetic resonance imaging after acoustic neuroma surgery: influence of packing materials in the drilled internal auditory canal on assessment of residual tumor. (1/261)
Serial magnetic resonance (MR) images taken after acoustic neuroma surgery were analyzed to evaluate the pattern and timing of postoperative contrast enhancement in 22 patients who underwent acoustic neuroma removal via the suboccipital transmeatal approach. The opened internal auditory canal (IAC) was covered with a muscle piece in nine patients and with fibrin glue in 13. A total of 56 MR imaging examinations were obtained between days 1 and 930 after surgery. MR imaging showed linear enhancement at the IAC within the first 2 days after surgery, and revealed nodular enhancement on day 3 or later in patients with a muscle piece. MR imaging tended to show linear enhancement at the IAC, irrespective of the timing of the examination in the patients with fibrin glue. Postoperative MR imaging on day 3 or later showed the incidence of nodular enhancement in patients with muscle was significantly higher than in patients with fibrin glue. The results illustrate the difficulty in differentiating nodular enhancement on a muscle piece from tumor by a single postoperative MR imaging study. Therefore, fibrin glue is generally advocated as a packing material of the IAC because it rarely shows masslike enhancement on postoperative MR imaging. When a muscle piece is used in patients at high risk for postoperative cerebrospinal fluid leaks, MR imaging should be obtained within the first 2 days after surgery, since benign enhancement of muscle will not occur and obscure the precise extent of tumor resection. (+info)Intraoperative monitoring during surgery for acoustic neuroma: benefits of an extratympanic intrameatal electrode. (2/261)
OBJECTIVES: To assess the utility of an extratympanic intrameatal electrode for intraoperative monitoring during acoustic neuroma and other cerebellopontine angle tumour surgery and to define the neurophysiological and surgical factors which influence hearing preservation. METHODS: Twenty two patients, 18 with acoustic neuromas and four with other cerebellopontine angle tumours, underwent intraoperative monitoring during tumour excision. The extratympanic intrameatal electrode (IME) was used to record the electrocochleogram (ECoG) and surface electrodes to record the brainstem auditory evoked response (ABR). RESULTS: The compound action potential (CAP) of the ECoG was two and a half times greater in amplitude than wave I of the ABR and was easily monitored. Virtually instant information was available as minimal averaging was required. Continuous monitoring was possible from the commencement of anaesthesia to skin closure. The IME was easy to place, non-invasive, and did not interfere with the operative field. Operative procedures which affected CAP or wave V latency or amplitude were drilling around the internal auditory meatus, tumour dissection, nerve section, and brainstem and cerebellar retraction. Hearing was achieved in 59% of patients. CONCLUSIONS: The IME had significant benefits in comparison with other methods of monitoring. The technique provided information beneficial to preservation of hearing. (+info)Magnetic resonance cisternography using the fast spin echo method for the evaluation of vestibular schwannoma. (3/261)
Neuroimaging of vestibular schwannoma was performed with the fat-suppression spoiled gradient recalled acquisition in the steady state (SPGR) method and magnetic resonance (MR) cisternography, which is a fast spin echo method using a long echo train length, for the preoperative evaluation of the lateral extension of the tumor in the internal auditory canal, and the anatomical identification of the posterior semicircular canal and the nerves in the canal distal to the tumor. The SPGR method overestimated the lateral extension in eight cases, probably because of enhancement of the nerves adjacent to the tumor in the canal. The posterior semicircular canal could not be clearly identified, and the cranial nerves in the canal were shown only as a nerve bundle. In contrast, MR cisternography showed clear images of the lateral extension of the tumor and the facial and cochlear nerves adjacent to the tumor in the internal auditory canal. The anatomical location of the posterior semicircular canal was also clearly shown. These preoperative findings are very useful to plan the extent to which the internal auditory canal can be opened, and for intraoperative identification of the nerves in the canal. MR cisternography is less invasive since no contrast material or radiation is required, as with thin-slice high-resolution computed tomography (CT). MR cisternography should replace high-resolution CT for the preoperative neuroradiological evaluation of vestibular schwannoma. (+info)High-resolution MR cisternography of the cerebellopontine angle, obtained with a three-dimensional fast asymmetric spin-echo sequence in a 0.35-T open MR imaging unit. (4/261)
High-resolution MR cisternography performed with 3D fast asymmetric spin-echo imaging (3D fast spin-echo with an ultra-long echo train length and asymmetric Fourier imaging) was optimized in a 0.35-T open MR imaging unit. The 0.35- and 1.5-T images of the two volunteers and three patients with acoustic schwannomas were then compared. The optimal parameters for images obtained by 3D fast asymmetric spin-echo imaging at 0.35 T were as follows: field of view, 15 cm; matrix, 256 x 256 x 40; section thickness, 1 mm; echo train length, 76; and imaging time, 10 minutes 44 seconds. Scans obtained from both normal volunteers showed the facial, cochlear, and superior and inferior vestibular nerves separately in the internal auditory canal on both 0.35- and 1.5-T images. All three acoustic schwannomas were depicted on both 0.35- and 1.5-T images. Screening for disease at the cerebellopontine angle and in the internal auditory canal, without the administration of contrast material on a low-field open MR imaging unit and within a clinically acceptable imaging time, may be possible. Further controlled prospective studies are required, however, before implementation on a wide basis. If proved effective, this may be of particular value for reducing healthcare costs and for imaging claustrophobic and pediatric patients in an open system. (+info)Assessment of internal auditory canal tumors: a comparison of contrast-enhanced T1-weighted and steady-state T2-weighted gradient-echo MR imaging. (5/261)
BACKGROUND AND PURPOSE: Although contrast-enhanced T1-weighted MR imaging is the standard of reference for diagnosing tumor in the cerebellopontine angle, high-resolution T2-weighted imaging may show more details of the seventh and eighth cranial nerve branches, resulting in more accurate tumor volume measurements. The purpose of this study was to compare two MR sequences for their ability to delineate internal auditory canal tumors. METHODS: Twenty-seven ears in 21 patients with 16 confirmed schwannomas were studied with the 3D T2-weighted prototype segment-interleaved motion-compensated acquisition in steady state (SIMCAST) and the T1-weighted contrast-enhanced spoiled gradient-echo (SPGR) techniques. Twenty-eight axial sections were acquired using parameters of 17/3.3 (TR/TE), a 40 degrees flip angle, a 20 x 15-cm or 22 x 16-cm field of view (FOV), a 512 x 256 matrix, and a 0.4- or 1.2-mm section thickness for the SIMCAST technique, and 30/4.2, a 30 degrees flip angle, a 20 x 20-cm FOV, a 512 x 288 matrix, and a 1.5-mm section thickness for the SPGR technique. Tumor appearance and depiction of surrounding anatomy, including the cranial nerves, were evaluated. Tumor volumes were measured by manual tracing. RESULTS: Both sequences clearly identified tumors that ranged in size from 0.06 to 3.0 cm3. Measurements on both sequences agreed, on average, within 14%. The information from both sequences was complementary. SIMCAST usually delineated the CSF spaces better, whereas SPGR more clearly showed the tumor/brain boundary. CONCLUSION: SIMCAST and SPGR are suitable for tumor detection and volume measurements. SPGR has somewhat better contrast, but SIMCAST excels at depicting the surrounding anatomy and tumor involvement of the seventh and eighth cranial nerves. (+info)Incidental detection of hippocampal sclerosis on MR images: is it significant? (6/261)
BACKGROUND AND PURPOSE: The prevalence of hippocampal sclerosis in the general nonepileptic patient population is not well described. While reports of its association with partial complex seizures are abundant, its absence in nonafflicted patients is generally presumed but not well documented. To test the hypothesis that hippocampal sclerosis is specific for epilepsy, we reviewed the MR imaging studies of 207 patients referred for hearing loss to determine whether high-resolution MR imaging could detect unsuspected hippocampal sclerosis in nonepileptic patients. METHODS: Our institution screens patients with hearing loss by using high-resolution coronal and axial temporal bone MR imaging that includes the hippocampus within the imaging volume. We retrospectively reviewed 207 studies randomly selected from this database. RESULTS: The hippocampus was normal in 205 patients; in the remaining two patients we identified one or more primary determinants for hippocampal sclerosis. Subsequent retrospective chart review revealed that both patients had had previously diagnosed seizure disorders. CONCLUSION: The imaging determinants of hippocampal sclerosis are not prevalent in nonepileptic patients. Incidental identification of hippocampal sclerosis on MR images is uncommon and significant, and should prompt further clinical investigation to exclude a seizure disorder. (+info)Ocular complications of acoustic neuroma surgery. (7/261)
AIM: To analyse the risk factors involved in the development of ocular complications after acoustic neuroma resection, in particular corneal complications and visual loss, and to identify measures that may reduce these. METHODS: 62 patients who underwent surgery for acoustic neuroma had a standardised ophthalmic examination and retrospective case note review. RESULTS: At final review (mean 37.6 months), although 38 patients reported ocular symptoms, only 22% saw 6/12 or worse. Patients with hypoaesthetic corneas had a higher incidence of corneal pathology (79%) than those with normal sensation (39%). Lagophthalmos increased the incidence of corneal pathology (to 80%); in those with normal closure, the incidence was only 46%. 20 patients required at least one ophthalmic surgical procedure. CONCLUSIONS: After acoustic neuroma resection patients place a considerable burden on the ophthalmologist. Immediate referral postoperatively, and frequent review of those with abnormal sensation may reduce the severity of long term ocular complications. (+info)Isolated metastases of adenocarcinoma in the bilateral internal auditory meatuses mimicking neurofibromatosis type 2--case report. (8/261)
A 56-year-old male with a history of lung cancer presented with isolated metastases of adenocarcinoma in the bilateral internal auditory meatuses (IAMs), mimicking the bilateral acoustic schwannomas of neurofibromatosis type 2, and manifesting as rapidly worsening tinnitus and bilateral hearing loss. Magnetic resonance imaging showed small tumors in both IAMs with no sign of leptomeningeal metastasis. The preoperative diagnosis was neurofibromatosis type 2. Both tumors were removed and the histological diagnoses were adenocarcinoma. Neuroimaging differentiation of a solitary metastatic IAM tumor from a benign tumor is difficult, although rapidly progressive eighth cranial nerve dysfunction suggests a malignant process. Metastases should be considered as a rare diagnostic possibility in a patient with small tumors in both IAMs. (+info)A neuroma is not a specific type of tumor, but rather refers to a benign (non-cancerous) growth or swelling of nerve tissue. The most common type of neuroma is called a Morton's neuroma, which typically occurs between the third and fourth toes in the foot. It develops as a result of chronic irritation, compression, or trauma to the nerves leading to the toes, causing them to thicken and enlarge.
Morton's neuroma can cause symptoms such as pain, numbness, tingling, or burning sensations in the affected area. Treatment options for Morton's neuroma may include rest, ice, orthotics, physical therapy, medication, or in some cases, surgery. It is essential to consult a healthcare professional if you suspect you have a neuroma or are experiencing related symptoms.
An acoustic neuroma, also known as vestibular schwannoma, is not actually a neuroma but rather a benign (noncancerous) tumor that develops on the vestibular nerve. This nerve is one of the two nerves that transmit sound and balance information from the inner ear to the brain. The tumor arises from an overproduction of Schwann cells, which normally provide a protective covering for the nerve fibers. As the tumor grows, it can press against the hearing and balance nerves, causing symptoms such as hearing loss, ringing in the ear (tinnitus), unsteadiness, and disequilibrium. In some cases, acoustic neuromas can become quite large and cause additional symptoms by pressing on nearby cranial nerves. Treatment options include observation, radiation therapy, or surgical removal of the tumor.
Post-traumatic neoplasms refer to abnormal growths or tumors that develop as a direct result of previous trauma or injury to the affected area. The trauma can cause an alteration in the cellular growth and division, leading to the development of a neoplasm. These neoplasms can be benign or malignant, and their formation is often associated with chronic inflammation and tissue repair processes initiated by the trauma. It's important to note that not all traumas will result in neoplasms, but an increased risk has been observed in certain cases. A healthcare professional should evaluate any new growths or abnormalities to determine their nature and appropriate course of treatment.
Peripheral nervous system (PNS) neoplasms refer to tumors that originate in the peripheral nerves, which are the nerves outside the brain and spinal cord. These tumors can be benign or malignant (cancerous). Benign tumors, such as schwannomas and neurofibromas, grow slowly and do not spread to other parts of the body. Malignant tumors, such as malignant peripheral nerve sheath tumors (MPNSTs), can invade nearby tissues and may metastasize (spread) to other organs.
PNS neoplasms can cause various symptoms depending on their location and size. Common symptoms include pain, weakness, numbness, or tingling in the affected area. In some cases, PNS neoplasms may not cause any symptoms until they become quite large. Treatment options for PNS neoplasms depend on several factors, including the type, size, and location of the tumor, as well as the patient's overall health. Treatment options may include surgery, radiation therapy, chemotherapy, or a combination of these approaches.
An earache is defined as a pain or discomfort in the ear. It can occur in either the outer, middle, or inner ear. The pain may be sharp, dull, constant, or intermittent and can vary in intensity from mild to severe. Earaches are often accompanied by other symptoms such as hearing loss, ringing in the ears (tinnitus), and feelings of pressure or fullness in the ear. In some cases, an earache may be a symptom of an underlying medical condition, such as an ear infection, swimmer's ear, or a ruptured eardrum. If you are experiencing an earache that is severe or persistent, it is important to seek medical attention from a healthcare professional.
Otologic surgical procedures refer to a range of surgeries performed on the ear or its related structures. These procedures are typically conducted by otologists, who are specialists trained in diagnosing and treating conditions that affect the ears, balance system, and related nerves. The goal of otologic surgery can vary from repairing damaged bones in the middle ear to managing hearing loss, tumors, or chronic infections. Some common otologic surgical procedures include:
1. Stapedectomy/Stapedotomy: These are procedures used to treat otosclerosis, a condition where the stapes bone in the middle ear becomes fixed and causes conductive hearing loss. The surgeon creates an opening in the stapes footplate (stapedotomy) or removes the entire stapes bone (stapedectomy) and replaces it with a prosthetic device to improve sound conduction.
2. Myringoplasty/Tympanoplasty: These are surgeries aimed at repairing damaged eardrums (tympanic membrane). A myringoplasty involves grafting a piece of tissue over the perforation in the eardrum, while a tympanoplasty includes both eardrum repair and reconstruction of the middle ear bones if necessary.
3. Mastoidectomy: This procedure involves removing the mastoid air cells, which are located in the bony prominence behind the ear. A mastoidectomy is often performed to treat chronic mastoiditis, cholesteatoma, or complications from middle ear infections.
4. Ossiculoplasty: This procedure aims to reconstruct and improve the function of the ossicles (middle ear bones) when they are damaged due to various reasons such as infection, trauma, or congenital conditions. The surgeon uses prosthetic devices made from plastic, metal, or even bone to replace or support the damaged ossicles.
5. Cochlear implantation: This is a surgical procedure that involves placing an electronic device inside the inner ear to help individuals with severe to profound hearing loss. The implant consists of an external processor and internal components that directly stimulate the auditory nerve, bypassing the damaged hair cells in the cochlea.
6. Labyrinthectomy: This procedure involves removing the balance-sensing structures (vestibular system) inside the inner ear to treat severe vertigo or dizziness caused by conditions like Meniere's disease when other treatments have failed.
7. Acoustic neuroma removal: An acoustic neuroma is a benign tumor that grows on the vestibulocochlear nerve, which connects the inner ear to the brain. Surgical removal of the tumor is necessary to prevent hearing loss, balance problems, and potential neurological complications.
These are just a few examples of the various surgical procedures performed by otolaryngologists (ear, nose, and throat specialists) to treat conditions affecting the ear and surrounding structures. Each procedure has its specific indications, benefits, risks, and postoperative care requirements. Patients should consult with their healthcare providers to discuss the most appropriate treatment options for their individual needs.
Foot diseases refer to various medical conditions that affect the foot, including its structures such as the bones, joints, muscles, tendons, ligaments, blood vessels, and nerves. These conditions can cause symptoms like pain, swelling, numbness, difficulty walking, and skin changes. Examples of foot diseases include:
1. Plantar fasciitis: inflammation of the band of tissue that connects the heel bone to the toes.
2. Bunions: a bony bump that forms on the joint at the base of the big toe.
3. Hammertoe: a deformity in which the toe is bent at the middle joint, resembling a hammer.
4. Diabetic foot: a group of conditions that can occur in people with diabetes, including nerve damage, poor circulation, and increased risk of infection.
5. Athlete's foot: a fungal infection that affects the skin between the toes and on the soles of the feet.
6. Ingrown toenails: a condition where the corner or side of a toenail grows into the flesh of the toe.
7. Gout: a type of arthritis that causes sudden, severe attacks of pain, swelling, redness, and tenderness in the joints, often starting with the big toe.
8. Foot ulcers: open sores or wounds that can occur on the feet, especially in people with diabetes or poor circulation.
9. Morton's neuroma: a thickening of the tissue around a nerve between the toes, causing pain and numbness.
10. Osteoarthritis: wear and tear of the joints, leading to pain, stiffness, and reduced mobility.
Foot diseases can affect people of all ages and backgrounds, and some may be prevented or managed with proper foot care, hygiene, and appropriate medical treatment.
Diathermy is a medical term that refers to the use of high-frequency electrical currents to heat body tissues. The term "diathermy" comes from the Greek words "dia," meaning "through," and "therme," meaning "heat." There are several types of diathermy, including shortwave, microwave, and ultrasound diathermy.
Shortwave diathermy uses electromagnetic waves with frequencies between 10 MHz and 27 MHz to generate heat in deep tissues. This type of diathermy is often used to treat muscle or joint pain, increase blood flow, or promote healing after surgery or injury.
Microwave diathermy uses high-frequency electromagnetic waves with frequencies between 915 MHz and 2450 MHz to generate heat in superficial tissues. This type of diathermy is often used to treat skin conditions such as dermatitis or psoriasis.
Ultrasound diathermy uses high-frequency sound waves with frequencies above 1 MHz to generate heat in soft tissues. This type of diathermy is often used to treat muscle or tendon injuries, promote healing, or relieve pain.
Diathermy should be administered by a trained healthcare professional, as there are potential risks and complications associated with its use, including burns, discomfort, or damage to implanted medical devices such as pacemakers.
The forefoot is the front part of the human foot that contains the toes and the associated bones, muscles, ligaments, and tendons. It is made up of five long bones called metatarsals and fourteen phalanges, which are the bones in the toes. The forefoot plays a crucial role in weight-bearing, balance, and propulsion during walking and running. The joints in the forefoot allow for flexion, extension, abduction, and adduction of the toes, enabling us to maintain our footing on various surfaces and adapt to different terrain.
The acoustic maculae, also known as the vestibularocochlear nerve or cranial nerve VIII, are a part of the human body's auditory and vestibular system. The acoustic maculae consist of two main structures: the cochlea and the vestibule.
The cochlea is responsible for hearing and converts sound waves into electrical signals that can be interpreted by the brain. It contains the organ of Corti, which has hair cells that are stimulated by sound vibrations and convert them into nerve impulses.
The vestibule, on the other hand, is responsible for maintaining balance and spatial orientation. It contains two sac-like structures called the utricle and saccule, which contain sensory hair cells that respond to gravity and linear acceleration.
Damage to the acoustic maculae can result in hearing loss, tinnitus (ringing in the ears), or balance disorders.
Metatarsalgia is a general term used to describe pain and inflammation in the ball of the foot (the metatarsal region). This is often caused by excessive pressure or stress on the metatarsal heads, usually due to factors such as poor foot mechanics, high-impact activities, or ill-fitting shoes. The pain can range from mild discomfort to sharp, intense sensations, and may be accompanied by symptoms like tingling, numbness, or burning in the toes. It's important to note that metatarsalgia is not a specific diagnosis but rather a symptom of an underlying issue, which should be evaluated and treated by a healthcare professional.
The temporal bone is a paired bone that is located on each side of the skull, forming part of the lateral and inferior walls of the cranial cavity. It is one of the most complex bones in the human body and has several important structures associated with it. The main functions of the temporal bone include protecting the middle and inner ear, providing attachment for various muscles of the head and neck, and forming part of the base of the skull.
The temporal bone is divided into several parts, including the squamous part, the petrous part, the tympanic part, and the styloid process. The squamous part forms the lateral portion of the temporal bone and articulates with the parietal bone. The petrous part is the most medial and superior portion of the temporal bone and contains the inner ear and the semicircular canals. The tympanic part forms the lower and anterior portions of the temporal bone and includes the external auditory meatus or ear canal. The styloid process is a long, slender projection that extends downward from the inferior aspect of the temporal bone and serves as an attachment site for various muscles and ligaments.
The temporal bone plays a crucial role in hearing and balance, as it contains the structures of the middle and inner ear, including the oval window, round window, cochlea, vestibule, and semicircular canals. The stapes bone, one of the three bones in the middle ear, is entirely encased within the petrous portion of the temporal bone. Additionally, the temporal bone contains important structures for facial expression and sensation, including the facial nerve, which exits the skull through the stylomastoid foramen, a small opening in the temporal bone.
Neuroma
Translabyrinthine approach
Brain tumor
Neurofibromatosis type II
N. H. Wadia
Allie Kiick
Auditory brainstem response
Juanita Terblanche
Intraoperative neurophysiological monitoring
Cerebellopontine angle syndrome
Tinnitus
Aage Møller
John H. Sampson
Schwannomatosis
Helena Bonham Carter
Neuro-oncology
Auditory brainstem implant
Smile surgery
Michael Stimpson
Sensory loss
Emanuel Xavier
Cerebellopontine angle
Craniofacial regeneration
Gail Rosseau
Aquaporin-6
List of health scares
David Torn
Shannon McFerran
Facial nerve paralysis
David Langer (neurosurgeon)
Acoustic Neuroma | MedlinePlus
Acoustic Neuroma
Acoustic Neuroma Care Providers | RUSH
Acoustic neuroma - Doctors and departments - Mayo Clinic
Acoustic Neuroma | UC San Diego Health
Acoustic Neuroma: Practice Essentials, History of the Procedure, Epidemiology
Acoustic Neuroma (Vestibular Schwannoma) | Memorial Sloan Kettering Cancer Center
ANA Membership - Acoustic Neuroma Association
Medifocus Guidebook on Acoustic Neuroma
Medifocus Guidebook on Acoustic Neuroma
Acoustic Neuroma | Brain and Spine Institute of Oregon | Providence
Acoustic Neuroma: Care Instructions
Acoustic Neuroma group Archives - Brainstrust, brain tumour charity
BANA UK | British Acoustic Neuroma Association
Can loud noise cause acoustic neuroma? Analysis of the INTERPHONE study in France | Occupational & Environmental Medicine
Acoustic Neuroma/Vestibular Schwannoma: Symptoms, Causes, & Treatment | University of Utah Health | University of Utah Health
Cyberknife - Acoustic Neuroma Patient Archive
Tumour of Opportunity: Brittany's Story | Acoustic Neuroma Association of Canada
SOCIETY OF BRITISH NEUROLOGICAL SURGEONS: SYMPOSIUM ON THE RESULTS OF OPERATIONS ON ACOUSTIC NEUROMAS | Journal of Neurology,...
Arnold Face to Face Support Group Meeting - BANA UK | British Acoustic Neuroma Association
Don't Panic - Acoustic Neuroma Patient Archive
The Silver Lining: Nicole's Journey with an AN | Acoustic Neuroma Association of Canada
Acoustic Neuroma Symptoms and Treatment | Houston Methodist
Petitions and Responses - WTC Health Program
Acoustic Neuroma - Brown Neurosurgery
Vestibular Schwannoma: (Acoustic Neuroma) | The Infographic Guide to Medicine | AccessMedicine | McGraw Hill Medical
Acoustic neuroma staging - wikidoc
Acoustic Neuroma Archives - MRCEM Success
acoustic neuroma surgeons - Happy Life
Large acoustic neuroma4
- A large acoustic neuroma can press on the brain and become life-threatening. (alberta.ca)
- A large acoustic neuroma can push on additional nerves causing numbing or tingling in your face as well as trouble swallowing. (utah.edu)
- Three days after my MRI, I learned that I had a very large acoustic neuroma and required brain surgery. (anac.ca)
- CT scan of a patient with a large acoustic neuroma on the right side of the brainstem. (medscape.com)
Tumor33
- An acoustic neuroma is a benign tumor that develops on the nerve that connects the ear to the brain. (medlineplus.gov)
- This focused, high-energy radiation prevents the growth of acoustic neuromas, but actual shrinkage of the tumor may never occur or may take several months. (braintumor.org)
- In rare cases, a facial nerve neuroma, vascular tumor, lipoma, or metastatic lesion is found within the cerebellopontine angle. (medscape.com)
- Acoustic neuromas are managed through microsurgical excision, by arresting tumor growth using stereotactic radiation therapy, or through serial observation. (medscape.com)
- Acoustic neuromas are managed in one of the following 3 ways: (1) microsurgical excision of the tumor, (2) arresting tumor growth using stereotactic radiation therapy, or (3) careful serial observation. (medscape.com)
- Acoustic neuroma, also called vestibular schwannoma, is a type of benign (noncancerous) tumor. (mskcc.org)
- An acoustic neuroma , also called a vestibular schwannoma , is a benign tumor that is located on the eighth cranial nerve. (medifocus.com)
- Treatment of acoustic neuromas is based upon an individual's age, symptoms, tumor size, pattern of tumor growth, overall physical health, and level of hearing at the time of diagnosis. (medifocus.com)
- An acoustic neuroma, or vestibular schwannoma, is a noncancerous tumor that forms around the nerves in the ear associated with hearing and balance, and thus affects someone's ability to do both. (tgh.org)
- An acoustic neuroma, also known as a vestibular schwannoma, is a rare, slow-growing tumor. (utah.edu)
- An acoustic neuroma is a tumor of the Schwann cells (insulation for nerve fibers). (utah.edu)
- If you believe you need an evaluation for an acoustic neuroma, you can make an appointment with one of our skull base tumor specialists . (utah.edu)
- Acoustic neuroma is a non-cancerous brain tumor that may develop from an overproduction of Schwann cells that press on the hearing and balance nerves in the inner ear. (houstonmethodist.org)
- Anyone else diagnosed with acoustic neuroma, a benign brain tumor? (mayoclinic.org)
- Can anyone tell me if anyone in this support group has been diagnosed and/or treated for acoustic neuroma, a benign tumor affecting the acoustic nerve, which is the eighth cranial nerve in your brain? (mayoclinic.org)
- Acoustic neuroma, also known as vestibular schwannoma, is a rare, slow growing non-cancerous tumor that grows on the hearing and balance nerves in the brain. (brownneurosurgery.com)
- Acoustic neuroma, also known as vestibular schwannoma, is a non-cancerous tumor. (dcgyan.com)
- An acoustic neuroma (also called a vestibular schwannoma ) is a benign, slow-growing tumor that grows off the eighth cranial nerve, called the vestibulocochlear nerve. (valleygammaknife.com)
- Acoustic neuroma symptoms are almost always related to hearing loss on the same side as the tumor. (valleygammaknife.com)
- An acoustic neuroma is a benign brain tumor that grows from the eighth cranial nerve resulting in progressive hearing loss, ringing in the ears (tinnitus) and dizziness. (nyspine.com)
- A mutation in a tumor-suppressor gene on the long arm of chromosome 22 is found in acoustic neuromas, and is responsible for their growth. (nyspine.com)
- In cases where the tumor is very small with out any associated symptoms, the acoustic neuroma may be observed. (nyspine.com)
- plural: neuromata or neuromas) is a growth or tumor of nerve tissue. (wikipedia.org)
- Acoustic neuroma - a slow-growing, benign tumor of the acoustic nerve. (wikipedia.org)
- Pacinian neuroma - a very rare, painful, benign hyperplastic tumor of Pacinian corpuscles (mechanoreceptors responsible for sensitivity to vibration and pressure), sometimes linked to a history of local trauma. (wikipedia.org)
- Acoustic Neuroma is also known as Vestibular Schwannoma and describes a non-cancerous, slow-forming tumor that develops on the vestibular nerve. (beltonesouth.com)
- An acoustic neuroma (vestibular schwannoma) is a benign tumor that develops on the balance and hearing nerves leading from the inner ear to the brain. (mayoclinic.org)
- The acoustic neuroma (or schwannoma) is a benign tumor which originates from the sheath covering the eighth cranial nerve (vestibular-cochlear). (microneurosurgery-roma.com)
- 1. The small intracanalar neuromas (less than 1 centimeter) with hearing preserved totally or in substantial part, represent the better situation for the complete removal of tumor and the preservation of the facial and acoustic nerves. (microneurosurgery-roma.com)
- After a series of appointments with her primary care and ear, nose and throat (ENT) physicians, an MRI confirmed the presence of a small acoustic neuroma , a rare brain tumor that grows on the hearing and balance nerves between the ear and brain. (osu.edu)
- In the United States, roughly 2,500 to 3,000 people are diagnosed annually with an acoustic tumor. (osu.edu)
- An acoustic neuroma (also known as vestibular schwannoma, acoustic neurilemoma, or acoustic neurinoma) is a benign tumor of the cranial nerve that connects the inner ear and the brain. (azadvancedent.com)
- Vestibular Schwannoma A vestibular schwannoma (acoustic neuroma) is a Schwann cell-derived tumor of the 8th cranial nerve. (msdmanuals.com)
Schwann9
- Acoustic neuromas are intracranial, extra-axial tumors that arise from the Schwann cells, investing either the vestibular or cochlear nerve. (medscape.com)
- Acoustic neuroma is also called a vestibular schwannoma, as it is caused by the overproduction of Schwann cells in the nervous system. (ucsd.edu)
- Acoustic neuroma tumors begin in what are called Schwann cells. (mskcc.org)
- Acoustic neuromas arise from special cells called Schwann cells, which surround and insulate the vestibulocochlear nerve. (valleygammaknife.com)
- A faulty gene on chromosome 22 leads to abnormal growth of Schwann cells which results in acoustic neuroma. (welldonesite.com)
- The portion of the nerve transmitting information about balance is called the vestibular portion of the eight nerve, and the majority of acoustic neuromas grow from the cells (schwann cells) covering this portion of the nerve. (nyspine.com)
- The neuroma of the 8 th cranial nerve (improperly said acoustic neuroma) originates from the covering sheath (myelin sheath of Schwann) of one of the two vestibular nerves (in over 70% of cases from the inferior), generally inside the internal auditory canal. (microneurosurgery-roma.com)
- An acoustic neuroma can result when Schwann cells overproduce, which may happen due to environmental factors like radiation or continual exposure to loud noises. (azadvancedent.com)
- Acoustic neuromas are Schwann cell tumors that usually originate on the vestibular division of the eighth cranial nerve in the proximal internal auditory canal. (medscape.com)
Diagnosis4
- Acoustic neuroma group Friday 11 August, 13.00-14.00 An Acoustic Neuroma diagnosis can be a very difficult thing to come to terms with. (brainstrust.org.uk)
- For many patients and their families, a tumour diagnosis - like an acoustic neuroma is a stressful time. (bana-uk.com)
- I had a physical, and my doctor advised me to monitor it, and sent me for an MRI with and w/o contrast, and schwannoma/acoustic neuroma was neurologist diagnosis. (mayoclinic.org)
- Depending on a patient's symptoms, to confirm the diagnosis of an acoustic neuroma, a doctor will often examine the patient's ear and perform a hearing test. (valleygammaknife.com)
Tumour5
- An acoustic neuroma is a growth (tumour) on the nerve to the inner ear. (alberta.ca)
- Around 3 years ago now I was diagnosed with something called Acoustic Neuroma which is basically a small tumour that is sitting on your ear that makes you off balance and the ringing in the ear is like a drill going off constantly. (mouthsofmums.com.au)
- An acoustic neuroma (also known as a vestibular schwannoma) is a benign (non-cancerous) tumour that arises from the balance and auditory nerves that supply the inner ear. (yobiboy.com)
- In some circumstances, radiation therapy is the preferred treatment option for old or unwell patients, as well as patients with bilateral acoustic neuroma (a tumour that affects both ears) or those whose tumour only affects one of their hearing ears. (yobiboy.com)
- Interphone was the largest case-control study to date investigating risks related to mobile phone use and to other potential risk factors for the tumours of interest and included 2,765 glioma, 2,425 meningioma, 1,121 acoustic neuroma, 109 malignant parotid gland tumour cases and 7,658 controls. (who.int)
Formation of acoustic neuromas2
- The reason behind the formation of acoustic neuromas is unclear. (tgh.org)
- Genetic factors play a large role in the formation of acoustic neuromas. (nyspine.com)
Ringing in t1
- Because it puts pressure on the hearing and balance nerves, an acoustic neuroma causes unilateral hearing loss, tinnitus (ringing in the ears), dizziness, and balance issues. (yobiboy.com)
Tinnitus3
- As acoustic neuromas enlarge, they eventually occupy a large portion of the cerebellopontine angle and cause hearing loss, dizziness, and tinnitus. (medscape.com)
- Symptoms of acoustic neuroma can include tinnitus (ringing in the ear), hearing loss and balance difficulties. (providence.org)
- Ringing in your ear (also called tinnitus) can be an early sign of an acoustic neuroma. (utah.edu)
Types of acoustic neuroma1
- There are two types of acoustic neuroma. (houstonmethodist.org)
Nerves9
- Acoustic neuromas typically remain encapsulated and, as they grow, they slowly displace surrounding tissue and nerves. (medifocus.com)
- An acoustic neuroma grows slowly, however, it can eventually begin to push against nerves between your inner ear and your brain. (utah.edu)
- Because acoustic neuromas can grow slowly, they can stretch or press on any structures in their neighborhood including the balance nerves, hearing nerve and the nerve that moves the muscles of the face (the facial nerve). (valleygammaknife.com)
- They typically grow slowly and do not spread to other body areas, but they can lead to acoustic neuroma symptoms by pressing on the nerves or surrounding tissues in the area. (valleygammaknife.com)
- An acoustic neuroma (vestibular schwannoma) arises from your eighth cranial nerve, which actually is composed of two nerves: (1) the vestibular nerve that carries messages from your inner ear to your brainstem to help regulate your body balance and eye movements, and (2) the cochlear nerve that is involved with your hearing. (welldonesite.com)
- This nerve, exclusively sensory, consists of two separate nerves: the cochlear (acoustic) nerve responsible for the perception of hearing and the vestibular nerve responsible for the balance. (microneurosurgery-roma.com)
- An acoustic neuroma develops within the eighth cranial nerve, usually within the course of the internal auditory canal, yet it often expands into the posterior fossa with secondary effects on other cranial nerves and the brain stem. (medscape.com)
- If untreated, an acoustic neuroma may expand into the cerebellopontine angle and compress facial and other cranial nerves. (medscape.com)
- Complete separation of the facial and acoustic nerves is apparent, and a discrete nervus intermedius develops, making this an important temporal reference point for gestational disorders that affect both systems. (medscape.com)
Small acoustic neuroma1
- Management of the small acoustic neuroma: a decision analysis. (medscape.com)
Bilateral acoustic neuromas3
- Bilateral acoustic neuromas affect both ears and are hereditary. (houstonmethodist.org)
- The hallmark of NF-2 is the presence of bilateral acoustic neuromas, unlike the spontaneous mutation which results in unilateral acoustic neuroma formation. (nyspine.com)
- [ 4 ] Usually unilateral in development, bilateral acoustic neuromas do occur in young adults, although rarely, in association with neurofibromatosis type 2. (medscape.com)
Slow-growin3
- Though acoustic neuromas are generally slow-growing tumors and their associated hearing loss is usually progressive, they may also present with sudden sensorineural hearing loss (SNHL). (medscape.com)
- Acoustic neuromas are typically slow growing tumors that usually develop over a period of years, although growth rates vary. (medifocus.com)
- Acoustic neuromas are typically slow-growing tumors that, over time, displace the surrounding tissue areas. (providence.org)
Neurofibromatosis3
- Though the exact cause of acoustic neuromas is unknown, the only known genetic risk factor is one parent with neurofibromatosis type 2 (NF-2) that accounts for a minority of cases. (medifocus.com)
- Patients with a condition called neurofibromatosis may have acoustic neuromas on both sides. (welldonesite.com)
- A small percentage of acoustic neuromas are the result of an inherited disorder called neurofibromatosis type II (NF2) , associated with a malfunctioning gene on chromosome 22. (azadvancedent.com)
Surgical8
- Various surgical approaches can be used to remove acoustic tumors, including the translabyrinthine approach, the retrosigmoid approach, and the middle cranial fossa approach. (medscape.com)
- At University of Utah Health, our specialists are highly trained in recognizing the symptoms and using the best surgical methods to remove acoustic neuromas safely and effectively. (utah.edu)
- Acoustic neuromas are not surgical emergencies. (anarchive.org)
- Microscopic surgical resection Microsurgical resection of an acoustic neuroma is typically performed by highly specialized neurological and ENT surgeons. (welldonesite.com)
- In particular, traumatic neuroma results from trauma to a nerve, often during a surgical procedure. (wikipedia.org)
- In Neurosurgical Departments with medium-high experience, the acoustic neuromas surgical mortality is close to zero, and in those rare cases when it happens, there are usually huge neuromas, very adherent to the brain stem and/or with hydrocephalus. (microneurosurgery-roma.com)
- For what concerns morbidity associated with this surgical procedure, it seems correct to talk about it in a different way, in relation to the size of the neuroma, its extension and relations with the brain stem. (microneurosurgery-roma.com)
- Drs. Prevedello and Adunka worked together to use a "middle fossa" surgical approach that removes small acoustic neuromas while maximizing the potential for hearing preservation. (osu.edu)
Neurosurgery1
- The physicians in the departments of Neurosurgery and Otolaryngology - Head and Neck Surgery at the Ohio State Wexner Medical Center have successfully treated patients with acoustic tumors for decades. (osu.edu)
Schwannoma5
- An acoustic neuroma is also known as a schwannoma, vestibular schwannoma, or neurilemmoma. (braintumor.org)
- BANA (British Acoustic Neuroma Association) has designed this website for people affected by acoustic neuroma (Vestibular Schwannoma) using information gathered from traceable sources. (bana-uk.com)
- Berkowitz A.L. Berkowitz, Aaron L. Vestibular Schwannoma: (Acoustic Neuroma). (mhmedical.com)
- An acoustic neuroma may also be called a vestibular schwannoma. (welldonesite.com)
- Interphone was therefore initiated as an international set of case-control studies1 focussing on four types of tumours in tissues that most absorb RF energy emitted by mobile phones: tumours of the brain (glioma and meningioma), acoustic nerve (schwannoma) and parotid gland. (who.int)
Nerve9
- With access to state-of-the-art laboratory and clinical facilities, Mayo Clinic researchers are innovators in the care of acoustic neuromas and other types of peripheral nerve tumors. (mayoclinic.org)
- The vestibular portion of the auditory nerve is the site of origin in up to 95% of the cases of acoustic neuromas. (medifocus.com)
- Acoustic neuromas arise with equal frequency on the superior and inferior portion of the vestibular nerve. (medifocus.com)
- Acoustic neuromas - also known as vestibular schwannomas - are non-cancerous tumors that develop on the vestibulocochlear nerve between the brain and inner ear. (providence.org)
- Neuromas can arise from different types of nervous tissue, including the nerve fibers and their myelin sheath, as in the case of genuine neoplasms (growths) like ganglioneuromas and neurinomas. (wikipedia.org)
- Traumatic neuroma follows different forms of nerve injury (often as a result of surgery). (wikipedia.org)
- neuromas generally arise from non-neuronal nerve tissues. (wikipedia.org)
- The difficulty encountered in saving the cochlear nerve is linked to the fact that, as mentioned earlier, the neuroma arises in over 70% of cases from the inferior vestibular nerve, in close contact with acoustic nerve that for this reason is the first to be involved. (microneurosurgery-roma.com)
- In 20-25% of cases the neuroma arises from the superior vestibular nerve, in close contact with the facial nerve. (microneurosurgery-roma.com)
Dizziness1
- Some people may not notice any balance challenges or dizziness because their body adjusts while the acoustic neuroma grows. (utah.edu)
Auditory3
- Thanks to advances in imaging techniques, health care providers can often identify small acoustic neuromas when they are still confined to the internal auditory canal. (medifocus.com)
- One in every 100,000 people will develop an auditory neuroma at some point in their lives. (yobiboy.com)
- Unilateral auditory neuromas account for about 8% of all tumours found inside the skull. (yobiboy.com)
Unilateral hear1
- A study by Foley et al of 945 persons with acoustic neuroma reported unilateral hearing loss to be the most common presenting system (80% of patients). (medscape.com)
Diagnose7
- Acoustic neuroma can be difficult to diagnose, because the symptoms are similar to those of middle ear problems. (medlineplus.gov)
- The experts at Tampa General Hospital can diagnose and treat patients with acoustic neuromas at any stage in the tumor's formation. (tgh.org)
- To diagnose acoustic neuroma, doctors rely on an ear exam, hearing test and imaging. (providence.org)
- Symptoms of an acoustic neuroma may resemble middle and inner ear conditions, and they may be difficult to diagnose. (houstonmethodist.org)
- Because acoustic neuromas grow slowly, doctors typically diagnose them in patients between 30 and 60 years old. (valleygammaknife.com)
- To diagnose an acoustic neuroma, your healthcare provider will ask you about your symptoms and perform a physical exam. (munaeem.org)
- Your otolaryngologist can diagnose an acoustic neuroma primarily through a review of your symptoms in conjunction with a hearing test and imaging scans (CT or MRI). (azadvancedent.com)
Headaches2
Slowly2
- Most acoustic neuromas grow very slowly. (mskcc.org)
- Acoustic neuromas, sometimes called vestibular schwannomas, usually grow very slowly (or not at all). (azadvancedent.com)
Risk of acoustic3
- To investigate possible associations between risk of acoustic neuroma and exposure to loud noise in leisure and occupational settings. (bmj.com)
- The present results agree with other recent reports implicating loud noise in the risk of acoustic neuroma. (bmj.com)
- People with this condition have an increased risk of acoustic neuromas in both ears. (utah.edu)
Cerebellopontine angle2
- Acoustic neuromas account for approximately 80% of tumors found within the cerebellopontine angle. (medscape.com)
- 2. The intra-extracanalar neuromas (protruding in the cerebellopontine angle) below the 2 cm in diameter, with partially or completely absent hearing, should be treated by the retrosigmoid approach. (microneurosurgery-roma.com)
Radiation5
- Neuromas that cause problems may be treated with radiation or surgery. (alberta.ca)
- Radiation - High doses of radiation to the face or neck could be linked to an increased risk of getting an acoustic neuroma. (utah.edu)
- Acoustic neuroma treatment options fall into three categories: observation, radiation therapy and surgery. (osu.edu)
- Unilateral acoustic neuromas are the result of environmental factors and although a direct cause is often unclear, past radiation to exposure to the head is a known risk factor. (azadvancedent.com)
- There is some evidence of a connection between exposure to low-dose radiation of the head and neck during childhood and the development of acoustic neuromas. (azadvancedent.com)
Radiosurgery1
- Long-term outcome after Gamma Knife radiosurgery for acoustic neuroma of all Koos grades: a single-center study. (medscape.com)
Treatment8
- Our physicians and surgeons are internationally recognized for their expertise and bring many years of experience in clinical care, clinical management, teaching and research to advance the treatment of acoustic neuroma. (ucsd.edu)
- Our acoustic neuroma treatment team will collaborate to give you the most advanced care that fits your unique needs. (mskcc.org)
- Access to the ANA Webinar Program, featuring medical professionals speaking on topics like current treatment trends, emotional and cognitive issues, acoustic neuroma research, balance, facial and eye issues, coping mechanisms, etc. (anausa.org)
- the exposure to the head during a standard single treatment or even the more typical 3 stage procedure used at Stanford for acoustic neuroma, adds up to no more than the x-ray dose administered in 1 or 2 CT scans. (anarchive.org)
- Once diagnosed with an acoustic neuroma, patients are sent to a neurosurgeon to discuss treatment. (nyspine.com)
- What are the Congress of Neurological Surgeons guidelines for hearing preservation in the treatment of acoustic neuroma? (medscape.com)
- Multifactor Influences of Shared Decision-Making in Acoustic Neuroma Treatment. (medscape.com)
- Stay informed with key sources of information about acoustic neuromas (i.e., treatment options, symptom management, medical advancements, and research). (anac-givecloud.ca)
Surgery4
- An acoustic neuroma may be observed in order to monitor its growth, or surgery may be performed. (braintumor.org)
- Mayo Clinic Q and A: Is surgery best for an acoustic neuroma? (mayoclinic.org)
- In early 2017, I had never heard of an acoustic neuroma, nor considered that one day I would be having brain surgery. (anac.ca)
- She knew that surgery to remove her acoustic neuroma could result in complications, such as diminished hearing and facial paralysis, that would significantly lower her quality of life. (osu.edu)
Brainstem1
- If an acoustic neuroma grows beyond an inch, it can push on the brainstem. (valleygammaknife.com)
Meningioma1
- Eligible cases were all residents of the study region diagnosed during the study period with a confirmed primary glioma, meningioma, or acoustic neuroma. (who.int)
Typically2
- For many patients, the first sign of an acoustic neuroma is hearing loss in one ear, which has typically occurred over time. (utah.edu)
- Because of the typically slow growth pattern of an acoustic neuroma, the initial symptoms involving hearing or steadiness may be subtle. (welldonesite.com)
Occur2
- At least 95% of acoustic neuromas are unilateral (occur on one side only). (medifocus.com)
- Acoustic neuromas generally occur in adults between the ages of 30 and 60. (utah.edu)
Patients with acoustic tumors1
- The definitive diagnostic test for patients with acoustic tumors is gadolinium-enhanced MRI. (medscape.com)
100,0001
- The incidence of acoustic neuromas is about one per 100,000 people. (medifocus.com)
Affects1
- Morton's neuroma affects the foot. (wikipedia.org)
Detection of acoustic2
- The use of computed tomography (CT) scans supplemented with intravenous contrast and magnetic resonance imaging (MRI) pictures are required for the early detection of acoustic neuroma. (yobiboy.com)
- Abstracts available at the meeting dealt with cause and effect analysis and merit of claims, hearing loss in dairy farm ers, standards and hearing conservation, the Army's HEARS program, and the detection of acoustic neuromas through hearing conservation programs. (cdc.gov)