Metastatic eccrine porocarcinoma: response to docetaxel (Taxotere) chemotherapy. (1/8)
BACKGROUND: Eccrine porocarcinoma is an uncommon neoplasm of the intra-epidermal sweat gland duct. PATIENTS AND METHODS: A case of eccrine porocarcinoma in a female renal transplant patient aged 45 years is described with a review of pertinent literature. RESULTS: The primary tumour was highly pleomorphic. In places large and small cells merged and focally the former component infiltrated the epidermis in a manner akin to Paget's disease of the breast. The majority of the tumour was high grade; using the modified Bloom and Richardson grading system, usually applied to mammary ductal carcinomas, the tumour graded as 3. Metastatic disease developed nine months following primary surgical treatment. The metastatic eccrine porocarcinoma was resistant to epirubicin but responded to docetaxel chemotherapy. CONCLUSIONS: There are no data to support the use of adjuvant therapy in the management of eccrine porocarcinoma. The use of the modified Bloom and Richardson grading system may define cases at high risk of relapse in which adjuvant therapy might be considered. Metastatic eccrine porocarcinoma has proven resistant to many chemotherapeutic agents. We report the first use of docetaxel in the management of this disease. The treatment was well tolerated and resulted in marked symptomatic and radiological responses. Treatment with docetaxel should be considered in future cases of this rare tumour. (+info)Eccrine porocarcinoma (malignant eccrine poroma): a case report. (2/8)
Eccrine porocarcinoma is a rare malignancy of eccrine sweat gland usually presenting as a long-standing growth on the lower extremity. It is more common in females. It may arise in a pre-existing eccrine poroma. A case presenting as nodular swelling over the dorsum of left hand in a 56-year-old man is described. Cytologic and histologic examination along with flow cytometric analysis is presented. (+info)Eccrine porocarcinoma. (3/8)
We present an unusual case of eccrine porocarcinoma in that diagnosis was delayed for many years after the initial lesion appeared, resulting in relatively large tumor. (+info)Poromatosis: the occurrence of multiple eccrine poromas. (4/8)
Eccrine poromas are rare, benign adnexal tumors derived from the intraepidermal portion of sweat ducts. Historically they were thought to arise from eccrine ducts although today it is thought that they may also have an apocrine origin. They usually appear as solitary, slow-growing, skin-colored papules on acral surfaces. Here we present the unusual situation of a patient with multiple poromas only three of which are located near the distal extremities. (+info)Eccrine poroma: a clinical-dermoscopic study of seven cases. (5/8)
(+info)Poroma of the hip and buttock. (6/8)
Poroma is a benign adnexal skin tumor seen in middle aged individuals with no sex predilection. The acral sites are the most commonly affected regions. Hip or buttock as a location of origin has rarely been reported. We report two cases of poroma, one located on the hip of a 75-year-old man and the other on the buttock of a 60-year-old man. (+info)EWS-Oct-4B, an alternative EWS-Oct-4 fusion gene, is a potent oncogene linked to human epithelial tumours. (7/8)
(+info)Dermoscopy of eccrine acrospiroma masquerading as nodular malignant melanoma. (8/8)
Eccrine acrospiroma, better known as eccrine poroma, is a benign adnexal neoplasm of the skin. Its clinical aspect can masquerade as some other nodular and cystic lesions. The current dermoscopy literature offers very few case studies. Moreover, these very few examples present a totally different appearance pattern compared to the one we examined. Its homogeneous blue pattern suggested the better-known nodular malignant melanoma; in fact, this dermoscopic appearance was due to the Tyndall effect. (+info)Acrospiroma is a rare, benign skin tumor that is characterized by the proliferation of sweat gland components. It is also known as hidradenoma or clear cell hidradenoma. The tumor typically appears as a solitary, slow-growing nodule on the skin, often found on the head, neck, or trunk.
Acrospiromas are believed to arise from the pluripotent cells of the eccrine sweat glands, and they can vary in size from a few millimeters to several centimeters in diameter. The tumor is usually well-circumscribed, mobile, and may be skin-colored, yellowish, or bluish in appearance.
Histologically, acrospiromas are composed of large, clear cells with distinct cell borders, arranged in sheets, nests, or cords. These cells have a high glycogen content, which gives them a clear or eosinophilic (pink) cytoplasm on hematoxylin and eosin staining.
Treatment of acrospiromas typically involves surgical excision, with a low risk of recurrence. Malignant transformation is rare but can occur in some cases, leading to the development of clear cell hidradenocarcinoma.