Sphenoid Sinusitis
Otorhinolaryngologic Surgical Procedures
Sphenoid Bone
Sphenoid Sinus
Cavernous Sinus Thrombosis
Maxillary Sinusitis
Ethmoid Sinusitis
Frontal Sinusitis
Mucocele involving the anterior clinoid process: MR and CT findings. (1/20)
We report two patients with surgically proved mucoceles involving the anterior clinoid process. One patient had a mucocele of an Onodi cell and the other had a mucocele isolated to the anterior clinoid process. The MR signal was increased on both T1- and T2-weighted images in the first patient but was isointense on both sequences in the second patient, a finding that resulted in misdiagnosis. The developmental and anatomic features, as well as the diagnostic pitfalls, are discussed. (+info)Use of standard radiography to diagnose paranasal sinus disease of asthmatic children in Taiwan: comparison with computed tomography. (2/20)
Paranasal sinus disease and bronchial asthma are frequently associated. Computed tomography imaging is currently the most reliable method for confirming the diagnosis of sinusitis. Due to the cost and amount of radiation during computed tomography, our aim was to analyze whether standard radiography, under computed tomography-control, had a reasonable degree of confidence in the diagnosis of sinusitis. Fifty-three asthmatic patients (42 males and 11 females) with a mean age of 9 years (range 4-14) were enrolled. We evaluated the maxillary sinuses, ethmoidal sinuses, frontal sinuses, and sphenoidal sinuses using standard radiography (Waters' view, Caldwell view, and lateral view) and compared with computed tomography (coronal views), the latter served as a standard. Computed tomography (CT) showed paranasal sinusitis in 58% (31/53) of the asthmatic children. Compared with the results of computed tomography, standard radiography revealed a sensitivity of 81.1% and a specificity of 72.7% for maxillary sinusitis. The sensitivity and specificity for ethmoidal, frontal, and sphenoidal sinusitis were 51.8%, 84.8%; 47.3%, 87.2%; and 40.8%, 93.3%, respectively. In 21 (40%) of the 53 patients, discrepancies were seen between the interpretations of standard radiography c and those of CT scans. In patients with maxillary sinusitis, the correlation between standard radiography and CT was good. However, ethmoidal, frontal, and sphenoidal sinusitis were poorly demonstrated using radiography. Standard radiography can be recommended as a screening method for maxillary sinusitis, but it is not recommended for the diagnosis of other paranasal sinusitis. (+info)Imaging of mucormycosis skull base osteomyelitis. (3/20)
Skull base osteomyelitis (SBO) is typically bacterial in origin and caused by Pseudomonas, although the fungus Aspergillus has also rarely been implicated. SBO generally arises from ear infections and infrequently complicates sinonasal infection. Rhinocerebral Mucor infection is characteristically an acute, fulminant, and deadly infection also affecting the orbits and deep face and is associated with intracranial complications. Bony involvement is uncommon because of the angioinvasive nature of the fungus. More recently, chronic invasive Mucor sinusitis has been described. We report the unusual clinical and imaging features of a patient with biopsy-proven invasive mucormycosis arising from chronic isolated sphenoid sinus disease, who presented with extensive SBO and a paucity of deep facial, orbital, or intracranial involvement. (+info)Invasive fungal sinusitis and meningitis due to Arthrographis kalrae in a patient with AIDS. (4/20)
We report the first described case of Arthrographis kalrae pansinusitis and meningitis in a patient with AIDS. The patient was initially diagnosed with Arthrographis kalrae pansinusitis by endoscopic biopsy and culture. The patient was treated with itraconazole for approximately 5 months and then died secondary to Pneumocytis carinii pneumonia. Postmortem examination revealed invasive fungal sinusitis that involved the sphenoid sinus and that extended through the cribiform plate into the inferior surfaces of the bilateral frontal lobes. There was also an associated fungal meningitis and vasculitis with fungal thrombosis and multiple recent infarcts that involved the frontal lobes, right caudate nucleus, and putamen. Post mortem cultures were positive for A. kalrae. (+info)Basilar artery vasculitis secondary to sphenoid sinusitis--case report. (5/20)
A 35-year-old male presented with basilar artery vasculitis secondary to sphenoid sinusitis manifesting as rapidly deteriorating symptoms including consciousness disturbance and right hemiparesis. Computed tomography (CT) on admission showed sphenoid sinusitis without intracranial lesion. Emergency angiography demonstrated basilar artery stenosis. The neurological deterioration was considered to be caused by ischemia of the perforating arteries branching from the stenotic portion of the basilar artery. The patient was treated with urokinase infusion through a microcatheter just proximal to the stenosis 3 hours after the onset of the symptoms. His consciousness level and right hemiparesis markedly improved immediately after the procedure. Magnetic resonance (MR) imaging on day 5 revealed that extension of the sphenoid sinusitis into the prepontine cistern had formed an abscess which was attached to the clivus. The basilar artery was embedded in the abscess at the angiographic stenosis. Cerebrospinal fluid (CSF) analysis showed white blood cell count of 601/mm3 with 82% neutrophils, 89.2 mg/dl protein, and 31 mg/dl glucose. No causative organism in the CSF could be identified by smear or culture. Early MR imaging and CSF examination are recommended when patients present with both ischemic symptoms involving the basilar artery and opacification of the sphenoid sinus on CT to identify basilar artery vasculitis secondary to sphenoid sinusitis. (+info)Acute isolated sphenoid sinusitis. (6/20)
INTRODUCTION: Acute isolated sphenoid sinusitis is seen in fewer than 3% of all cases of sinusitis. It is frequently misdiagnosed because of its vague symptoms and the paucity of clinical findings. We report 2 cases of isolated acute isolated sphenoid sinusitis with unusual presentations. CLINICAL PICTURE: Both patients presented with acute headache, eye pain and fever, and were provisionally diagnosed as meningitis. In 1 case, the symptoms were on the contralateral side of the sphenoid infection. Intracranial complications were also present. TREATMENT: Treatment included intravenous antibiotics and endoscopic sphenoidotomy. OUTCOME: Both patients recovered with no residual neurological disability. CONCLUSION: Acute sphenoiditis usually presents with subtle symptoms and elusive physical findings and hence a high index of suspicion is necessary. Complications may arise due to the close proximity of important structures to the sphenoid sinus. Uncomplicated cases can resolve with optimal antibiotic therapy if diagnosed and treated early. Persistence or progression of disease with development of intracranial complications are indications for immediate surgical drainage. (+info)An unusual presentation of sphenoid sinusitis with septicaemia in a healthy young adult. (7/20)
Streptococcus pneumonia and Haemophilus influenzae account for more than 50% of bacterial acute sinusitis. Isolated sphenoid sinusitis is a rare disease with potentially devastating complications such as cranial nerve involvement, brain abscess, and meningitis. It occurs at an incidence of about 2.7% of all sinus infections. There have been no previous reported cases of unilateral sphenoid sinusitis presenting as septicaemia in an otherwise healthy young immunocompetent adult. (+info)Headache induced by isolated sphenoid fungal sinusitis: sinus headache? (8/20)
(+info)Sphenoid sinusitis is a medical condition characterized by the inflammation or infection of the sphenoid sinuses, which are air-filled cavities located in the sphenoid bone at the center of the skull base, behind the eyes. These sinuses are relatively small and difficult to access, making infections less common than in other sinuses. However, when sphenoid sinusitis does occur, it can cause various symptoms such as headaches, facial pain, nasal congestion, fever, and vision problems. Sphenoid sinusitis may result from bacterial or fungal infections, allergies, or autoimmune disorders. Diagnosis typically involves a combination of clinical evaluation, imaging studies like CT scans, and sometimes endoscopic examination. Treatment options include antibiotics for bacterial infections, antifungal medications for fungal infections, nasal sprays, decongestants, pain relievers, and, in severe or recurrent cases, surgical intervention.
Sinusitis, also known as rhinosinusitis, is a medical condition characterized by inflammation of the paranasal sinuses, which are air-filled cavities located within the skull near the nose. The inflammation can be caused by viral, bacterial, or fungal infections, as well as allergies, structural issues, or autoimmune disorders.
In sinusitis, the mucous membranes lining the sinuses become swollen and may produce excess mucus, leading to symptoms such as nasal congestion, thick green or yellow nasal discharge, facial pain or pressure, reduced sense of smell, cough, fatigue, and fever.
Sinusitis can be classified into acute (lasting less than 4 weeks), subacute (lasting 4-12 weeks), chronic (lasting more than 12 weeks), or recurrent (multiple episodes within a year). Treatment options depend on the underlying cause and severity of symptoms, and may include antibiotics, nasal corticosteroids, decongestants, saline irrigation, and in some cases, surgery.
Otorhinolaryngologic surgical procedures are surgeries that are performed on the head and neck region, specifically involving the ear, nose, and throat (ENT) regions. This field is also known as otolaryngology-head and neck surgery. The procedures can range from relatively minor ones, such as removing a small nasal polyp or inserting ear tubes, to more complex surgeries like cochlear implantation, endoscopic sinus surgery, or removal of tumors in the head and neck region. These surgical procedures are typically performed by specialized physicians called otorhinolaryngologists (also known as ENT surgeons) who have completed extensive training in this area.
The sphenoid bone is a complex, irregularly shaped bone located in the middle cranial fossa and forms part of the base of the skull. It articulates with several other bones, including the frontal, parietal, temporal, ethmoid, palatine, and zygomatic bones. The sphenoid bone has two main parts: the body and the wings.
The body of the sphenoid bone is roughly cuboid in shape and contains several important structures, such as the sella turcica, which houses the pituitary gland, and the sphenoid sinuses, which are air-filled cavities within the bone. The greater wings of the sphenoid bone extend laterally from the body and form part of the skull's lateral walls. They contain the superior orbital fissure, through which important nerves and blood vessels pass between the cranial cavity and the orbit of the eye.
The lesser wings of the sphenoid bone are thin, blade-like structures that extend anteriorly from the body and form part of the floor of the anterior cranial fossa. They contain the optic canal, which transmits the optic nerve and ophthalmic artery between the brain and the orbit of the eye.
Overall, the sphenoid bone plays a crucial role in protecting several important structures within the skull, including the pituitary gland, optic nerves, and ophthalmic arteries.
The sphenoid sinuses are air-filled spaces located within the sphenoid bone, which is one of the bones that make up the skull base. These sinuses are located deep inside the skull, behind the eyes and nasal cavity. They are paired and separated by a thin bony septum, and each one opens into the corresponding nasal cavity through a small opening called the sphenoethmoidal recess. The sphenoid sinuses vary greatly in size and shape between individuals. They develop during childhood and continue to grow until early adulthood. The function of the sphenoid sinuses, like other paranasal sinuses, is not entirely clear, but they may contribute to reducing the weight of the skull, resonating voice during speech, and insulating the brain from trauma.
Cavernous sinus thrombosis is a medical condition that refers to the formation of a blood clot (thrombus) in the cavernous sinuses, which are located near the base of the brain and are important for draining blood from the face and brain. This condition can occur as a complication of an infection in the facial area or sinuses, or it can be associated with other medical conditions such as cancer or trauma.
Symptoms of cavernous sinus thrombosis may include headache, fever, eye pain, swelling or bulging of the eyes, double vision, and decreased vision. If left untreated, this condition can lead to serious complications such as meningitis, brain abscess, or even death. Treatment typically involves administering antibiotics to treat any underlying infection and anticoagulants to prevent further clot formation. In some cases, surgery may be necessary to remove the clot.
Maxillary sinusitis is a medical condition characterized by inflammation or infection of the maxillary sinuses, which are air-filled cavities located in the upper part of the cheekbones. These sinuses are lined with mucous membranes that produce mucus to help filter and humidify the air we breathe.
When the maxillary sinuses become inflamed or infected, they can fill with fluid and pus, leading to symptoms such as:
* Pain or pressure in the cheeks, upper teeth, or behind the eyes
* Nasal congestion or stuffiness
* Runny nose or postnasal drip
* Reduced sense of smell or taste
* Headache or facial pain
* Fatigue or fever (in cases of bacterial infection)
Maxillary sinusitis can be caused by viruses, bacteria, or fungi, and may also result from allergies, structural abnormalities, or exposure to environmental irritants such as smoke or pollution. Treatment typically involves managing symptoms with over-the-counter remedies or prescription medications, such as decongestants, antihistamines, or antibiotics. In some cases, more invasive treatments such as sinus surgery may be necessary.
Ethmoid sinusitis is a medical condition that refers to the inflammation or infection of the ethmoid sinuses. The ethmoid sinuses are a pair of small, air-filled cavities located in the upper part of the nasal cavity, near the eyes. They are surrounded by delicate bone structures and are connected to the nasal cavity by narrow channels.
Ethmoid sinusitis can occur as a result of a viral, bacterial, or fungal infection, or it may be caused by allergies, environmental factors, or structural abnormalities in the nasal passages. When the ethmoid sinuses become inflamed or infected, they can cause symptoms such as:
* Nasal congestion or stuffiness
* Pain or pressure in the forehead, between the eyes, or in the cheeks
* Headaches or facial pain
* Thick, discolored nasal discharge
* Postnasal drip
* Coughing or sneezing
* Fever
* Fatigue
Ethmoid sinusitis can be acute (lasting for a short period of time) or chronic (persisting for several weeks or months). If left untreated, ethmoid sinusitis can lead to complications such as the spread of infection to other parts of the body, including the eyes and brain. Treatment for ethmoid sinusitis may include antibiotics, decongestants, nasal sprays, or surgery in severe cases.
Frontal sinusitis is a type of sinus infection that specifically involves the frontal sinuses, which are located in the forehead region above the eyes. The condition is characterized by inflammation and infection of the mucous membrane lining the frontal sinuses, leading to symptoms such as headaches, facial pain or pressure, nasal congestion, and thick nasal discharge.
Frontal sinusitis can be caused by viral, bacterial, or fungal infections, as well as structural issues like nasal polyps or deviated septum that obstruct the sinus drainage pathways. Treatment options for frontal sinitis may include antibiotics, nasal decongestants, corticosteroids, saline nasal irrigation, and in some cases, endoscopic sinus surgery to alleviate obstructions and improve sinus drainage.
Paranasal sinus diseases refer to a group of medical conditions that affect the paranasal sinuses, which are air-filled cavities located within the skull near the nasal cavity. These sinuses include the maxillary, frontal, ethmoid, and sphenoid sinuses.
Paranasal sinus diseases can be caused by a variety of factors, including viral, bacterial, or fungal infections, allergies, structural abnormalities, or autoimmune disorders. Some common paranasal sinus diseases include:
1. Sinusitis: Inflammation or infection of the sinuses, which can cause symptoms such as nasal congestion, thick nasal discharge, facial pain or pressure, and reduced sense of smell.
2. Nasal polyps: Soft, benign growths that develop in the lining of the nasal passages or sinuses, which can obstruct airflow and cause difficulty breathing through the nose.
3. Sinonasal tumors: Abnormal growths that can be benign or malignant, which can cause symptoms such as nasal congestion, facial pain, and bleeding from the nose.
4. Sinus cysts: Fluid-filled sacs that form in the sinuses, which can cause symptoms similar to those of sinusitis.
5. Fungal sinusitis: Infection of the sinuses with fungi, which can cause symptoms such as nasal congestion, facial pain, and thick, discolored mucus.
Treatment for paranasal sinus diseases depends on the underlying cause and severity of the condition. Treatment options may include medications, such as antibiotics, antihistamines, or corticosteroids, as well as surgical intervention in more severe cases.