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At least 235 records · Page 13Linked to original sources
PubMed2004

Nodular hidradenocarcinoma on the scalp of a young woman: case report and review of literature.

BACKGROUND: Nodular hidradenocarcinoma was first reported as clear-cell eccrine carcinoma by Keasby and Hadley in 1954 (Cancer 1954;7:934-52) and rare malignant tumor. Several synonyms and related terms for nodular hidradenocarcinoma have appeared in the literature. OBJECTIVE: They have potential for uncontrollable local recurrence, tend to metastasize, and often cause death. Most cases have been reported in the pathology literature with limited clinical information. METHODS: We report a 27-year-old woman with nodular hidradenocarcinoma on the scalp. RESULT: The management of rare cases is not well defined. In our case, she was only treated with a wide local excision, and no recurrence was observed 2 years after excision. CONCLUSION: Most authors have concluded that early wide surgical excision of the tumor is the treatment of choice. The efficiency of adjuvant therapy generally has not established.

Acrospiroma↗
PubMed2004

Mohs surgery for malignant eccrine neoplasms.

BACKGROUND: Eccrine carcinomas (ECs) are rare tumors with potentially aggressive clinical behavior and a high recurrence rate following conventional surgical excision. With the exception of microcystic adnexal carcinoma (MAC), there have been few reports on the use of Mohs micrographic surgery (MMS) as a primary treatment for EC. OBJECTIVE: To review the use of MMS for EC and compare treatment outcomes with those of conventional surgical excision. METHODS: We report our use of MMS in 7 cases of EC and review the literature regarding the use of MMS for EC excluding microcystic adnexal carcinoma (MAC), which has been described elsewhere. RESULTS: A total of 19 case reports describing MMS for non-MAS malignant eccrine neoplasms were reviewed. There were no reported recurrences over an average follow-up period of 29 months, whereas the local recurrence rate following conventional surgical excision of these neoplasms from 10-70%. CONCLUSIONS: While the clinical experience is limited, the use of MMS appears to decrease recurrence rates when compared to conventional surgical excision. Further experience and longer follow-up intervals will be necessary to demonstrate superior efficacy and recommended surgical margins.

Acrospiroma↗
PubMedDate not supplied

Malignant eccrine spiradenoma of the vulva: a case report and review of the literature.

Malignant eccrine spiradenoma is a rare skin tumor of sweat gland origin. We present the first reported case of this tumor in the female genitalia. Due to the rarity of this tumor, there has yet to be an established standard of care. The present case is that of a 41-year-old woman with malignant eccrine spiradenoma of the periclitoral region. She had an 18-month history of a recurrent, painful mass adjacent to the clitoris. Her diagnosis was made after excision of the cystic tumor. The patient then underwent a partial radical vulvectomy with bilateral sentinel lymph node sampling. As malignant eccrine spiradenoma is a rare tumor, no standard care exists for treatment and postoperative management. Based on our review of the literature, wide local excision appears to be the preferred initial treatment. Furthermore, adjuvant chemotherapy and/or radiation does not seem to improve survival in patients with advanced or recurrent cancer. Although lymph node sampling and/or lymphadenectomy is frequently reported in the treatment of this tumor, hematogenous metastasis can also occur. Therefore, these patients require close postoperative follow-up for recurrent disease.

Acrospiroma↗
PubMed1996

Malignant eccrine poroma with multiple visceral metastases: report of a case with autopsy findings.

An autopsy case of malignant eccrine poroma (MEP) with multiple visceral metastases is reported. A flat, dark tumor of 1 cm in diameter developed on a pre-existing pigmented spot at the left side of the waist of a 58-year-old male. The histopathology suggested the tumor to be malignant melanoma. Nine years later, a painless swelling occurred in the left lower leg, resulting from the obstruction of lymphatics at the left inguinal region. The swelling continued and spread with pain, reaching the inguinal region. Two years later, several papules appeared around the left knee, from which an extensive lymphorrhea occurred. The histopathology of the resected papules suggested epidermoid carcinoma or trichilemmal carcinoma, mainly localized within the lymphatics of the upper dermis. Re-examination of the first skin tumor and electron microscopy of the tumor obtained at autopsy revealed that both tumors were MEP. Although the metastases to the local cutaneous regions and lymph nodes via the lymphatics occur in 20% of MEP, cases with multiple visceral metastases are very few.

Acrospiroma↗
PubMed1997

Histogenesis of clear cell hidradenoma: immunohistochemical study of keratin expression.

The expression of cytokeratins in 10 cases of clear cell hidradenoma, including 3 cases of solid cystic hidradenoma, were examined using 21 kinds of monoclonal antibodies. We divided them into three histologic patterns: massive nests with a few lumina (M nests), nests with some tubular lumina (L nests), and nests in solid cystic hidradenomas (S nests). All hidradenomas showed similar immunoreactivities to those in the lower dermal ducts or secretory cells of normal eccrine glands. With antibodies against simple epithelial cytokeratins (CKs 7, 8, 18, and 19), however, different immunostaining was noted among the three histologic patterns. Namely, the M nests failed to react to them, although some luminal cells in the L nests revealed a positive staining. Furthermore, a majority of luminal cells in the S nests revealed a positive staining with them. Therefore, we think that the luminal cells in solid cystic hidradenoma mainly differentiate toward the secretory cells, and that the M nests mainly differentiate toward the dermal duct. Those in the L nests are thought to differentiate toward the dermal duct and the secretory cells. The proportion of the differentiation toward luminal cells of dermal ducts to the differentiation toward secretory cells was the main difference among the three nests. In addition, there was no difference in immunophenotypes between clear cells and epidermoid cells in the two kinds of hidradenomas.

Acrospiroma↗
PubMed1997

Differentiation of eccrine poroma cells to cytokeratin 1- and 10-expressing cells, the intermediate layer cells of eccrine sweat duct, in the tumor cell nests.

It has been shown that an intermediate cell layer exists between a luminal cell layer and a peripheral cell layer in human eccrine sweat ducts by immunohistochemistry using anti-keratin antibodies 34 beta B4 and DE-K10. These antibodies react to cytokeratin 1 and 10 respectively, and stain the intermediate cells specifically, but not luminal cells nor peripheral cells. Cytokeratin 1 and 10 are considered to appear as a differentiated keratin in the terminal process of epidermal keratinization. We examined 5 cases of eccrine poroma with 34 beta B4 and DE-K10. Various numbers of the poroid cells reacted to these anti-keratin antibodies in 4 cases. Some positive cells were observed around the cuticular cells in two of them. The present study demonstrated that terminal differentiation in terms of keratinization can occur in eccrine poromas, and that the 34 beta B4- and DE-K10-positive cells around the cuticular cells differentiate toward the intermediate cells in cytokeratin expression profile and location.

Acrospiroma↗
PubMed2006

Pigmented malignant hidroacanthoma simplex mimicking irritated seborrheic keratosis.

Pigmented variant of malignant hidroacanthoma simplex (PMHS) is very rare. We are aware of only two reported cases, all arising in pigmented hidroacanthoma simplex (HS). We report the third case of PMHS arising in a pigmented HS. A 71-year-old-woman presented with a well-demarcated pigmented hyperkeratotic tumor on the right knee resembling irritated seborrheic keratosis. Histopathologic examination of the excised tumor revealed intraepidermal proliferation of atypical polygonal poroid cells forming large, sharply demarcated nests with colonization of dendritic melanocytes. In addition, there were focal changes of a benign pigmented HS and syringofibroadenoma. The key diagnostic features of ductal structures and intracytoplasmic lumina were highlighted by carcinoembryonic antigen and epithelial membrane antigen immunostaining. PMHS should be differentiated from irritated seborrheic keratosis, melanoacanthoma, Bowen's disease and malignant melanoma both clinically and pathologically.

Acrospiroma↗
PubMed2007

Sarcomatoid eccrine porocarcinoma: report of two cases and a review of the literature.

Eccrine porocarcinoma is an uncommon sweat gland malignancy. To the best of our knowledge, there has been no report in the English literature of porocarcinoma with predominantly undifferentiated sarcomatous change. We present two cases of sarcomatoid eccrine porocarcinoma associated with a benign poroma. Case 1 pertained to an 82-year-old woman with an ulcerated chest wall tumor, and Case 2 was that of a 74-year-old woman who presented with an ulcerated plaque in the lower leg. Case 1 showed an unusual pseudo-angiosarcomatous morphology with spindle cells dissecting through collagen bundles and forming vascular like channels. Case 2 revealed high-grade malignant spindle cells with focal evidence of ductal differentiation. In both the cases, benign poromatous elements were histologically evident. Immunohistochemistry performed showed pancytokeratin positivity in spindle cells of both lesions. Epithelial membrane antigen and carcino-embryonic antigen positivity in the malignant ductal elements and focal smooth muscle actin staining of the spindle cells were demonstrated in Case 2. A brief review of relevant literature is presented.

Acrospiroma↗
PubMed2000

A unique case of eccrine porocarcinoma with pulmonary lymphangitis and pericardial involvement: biological characterization and clinical aggressiveness.

A unique case of eccrine porocarcinoma with pulmonary lymphangitis and pericardial involvement is reported. The clinical course was aggressive, leading to the death of the patient a few months after diagnosis. Certain pathologial markers of clinical aggressiveness were retrospectively investigated: p53 and Ki-67 expression were determined by means of immunohistochemistry. Angiogenesis was assessed by determination of intratumor microvessel density at the vascular 'hot spot' with the anti-CD34 monoclonal antibody and quantitative analysis using computerized image analyzer. Both primary tumor and metastatic lymph node presented immunostaining for p53 and Ki-67, with a higher degree of vascularization in the secondary lesions compared to the primary tumor. Our findings suggest a correlation between tumor vascularization and clinicopathological parameters of aggressiveness in malignant eccrine porocarcinoma. Taking into account the disappointing results of current treatments for metastatic eccrine porocarcinoma, the assay of microvessel density may be helpful in selecting the patients of high risk for recurrence or death who may benefit of anti-angiogenic therapies.

Acrospiroma↗
PubMed1999

Metastasizing porocarcinoma of the head with lethal outcome.

Porocarcinoma is a very rare malignant tumor arising from the duct of eccrine sweat glands. Its prognosis is variable. We report on a patient who developed lymph node and multiple distant metastases, and who died of this malignancy only 6 months after the initial diagnosis.

Abdominal Neoplasms↗
PubMed2002

In vivo confocal imaging of pigmented eccrine poroma.

BACKGROUND: Near-infrared reflectance confocal microscopy (CM) imaging is a noninvasive technique that can be utilized to evaluate histologic features of cutaneous lesions in vivo. OBJECTIVE: A case of pigmented eccrine poroma was examined with CM. METHODS: Confocal images were taken to define the features of the lesion and correlated with transverse hematoxylin-eosin (HE)-stained sections. RESULTS: In CM imaging, a well-demarcated homogeneous nest consisting of small uniform cells was seen. The nest contained nonrefractile dark spaces that may represent cuticuli. Many dendritic melanocytes containing melanin were intermingled with the tumor cells, and numerous melanophages were present in the upper dermis. A marked prominence of surrounding vessels was also demonstrated. CONCLUSIONS: CM could well demonstrate the features of a pigmented eccrine poroma, as correlated with transverse HE-stained sections. However, high reflectance signals from melanin had to be carefully considered before a definitive diagnosis could be made.

Acrospiroma↗
PubMed1995

Malignant hidroacanthoma simplex. A case report and literature review.

A 73-year-old woman with a malignant hidroacanthoma simplex on her right lower limb is reported. The lesion was immunohistochemically studied. Carcino-embryonic antigen and epithelial membrane antigen were found in the luminal border of ductal structures within the aggregations of neoplastic cells. We review the literature on this subject.

Acrospiroma↗
PubMedDate not supplied

Porocarcinoma detected by fine needle aspiration biopsy of a node metastasis. A case report.

BACKGROUND: Porocarcinomas were first reported by Pinkus and Meherengan in 1963 as uncommon malignant adnexal tumors of the skin characterized by epidermotropism with pagetoid diffusion within the epidermis. CASE: The cytologic findings of an eccrine porocarcinoma lymph node metastasis in a 65-year-old female and histologic features of the skin recurrence are reported. Metastasis was firstly identified by fine needle aspiration biopsy (FNAB) performed on one inguinal lymph node. Cytologically the tumor was characterized by atypical malignant cells showing clear granular or keratinized cytoplasm and vesicular nuclei, with prominent nucleoli, which were irregularly dispersed or forming nests or cords, sometimes harboring central necrosis. The skin metastasis, detected after the cytologic FNAB diagnosis, showed superficial dissemination within the epidermis and dermal invasion. CONCLUSION: Cytologic diagnosis of porocarcinoma metastases by FNAB is important for adequate treatment, but adherence to strict diagnostic criteria is necessary. The tumor cells could be histogenetically related to the intraepidermal duct cells of the eccrine sweat glands, and pagetoid diffusion is considered a sort of homing phenomenon.

Acrospiroma↗