Poroma

08/01/2000 - "There are no immunohistochemical studies on cytokeratin (CK) expression in large series of cases of apocrine poroma. "
04/01/1997 - "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."
05/01/2015 - "In contrast, the poroma cells only expressed cytokeratin MNF116. "
09/01/2008 - "In eccrine poroma epidermal keratins K5/K14 were ubiquitously expressed in all poroid cells. "
08/01/2000 - "Based on the keratin immunohistochemistry, the neoplastic cells in eccrine and apocrine poromas are considered to be closely related to the cells of dermal sweat ducts. "

08/01/1992 - "Successful therapy of metastatic eccrine poroma using perilesional interferon alfa and interleukin 2."

08/01/1992 - "Successful therapy of metastatic eccrine poroma using perilesional interferon alfa and interleukin 2."

06/01/1975 - "Hidroacanthoma simplex: an ultrastructural study and comparison with eccrine poroma."
03/01/2015 - "Histologically, cases of poroma were divided into three subtypes, including classic poroma (23 cases), hidroacanthoma simplex (3 cases) and dermal duct tumor (9 cases). "
02/01/2011 - "Porocarcinoma is a rare skin appendage carcinoma that may arise de novo or be associated with pre-existing poroma and hidroacanthoma simplex (HAS). "
12/01/2005 - "Hidroacanthoma simplex (HAS) is a rare benign tumor that is also known as intraepidermal poroma. "
02/01/1994 - "A single poroid neoplasm composed of three histologically distinct lesions (hidroacanthomas simplex, eccrine poroma, and dermal duct tumor) is reported. "

06/01/2001 - "Immunohistochemical study of angiotensin receptors in normal human sweat glands and eccrine poroma."
06/01/2001 - "To clarify the expression and localization of the angiotensin receptors in normal human sweat glands and eccrine poroma. "

12/01/2010 - "Nonpigmented eccrine poromas (EPs) occasionally mimic various skin tumours, but their dermoscopic features have not been clarified. "
01/01/2009 - "Eccrine poroma can mimic benign and malignant melanocytic and non-melanocytic lesions. "
01/01/2007 - "Eccrine poroma (EP) may clinically mimic a number of benign and malignant skin tumors. "
06/01/2014 - "Pigmented poromas may be observed even in Caucasian patients and their clinical aspect mimic basal cell carcinoma and/or melanoma. "
01/01/2010 - "Poroma is a rare benign neoplasm (derived from the intraepidermal part of the eccrine or apocrine duct), which may clinically mimic malignant tumors such as (amelanotic) malignant melanoma and porocarcinoma. "

09/01/2008 - "Poroid precursor cells of poromas do not comprise peripheral duct cells nor do poromas differentiate towards peripheral or luminal duct cells. "
06/01/2001 - "In 12 cases of eccrine poroma, some of the tumour cells in the tumour strands and cells surrounding the luminal structures stained positively. "
01/01/1991 - "Our results show that, with respect to their CK expression pattern, the majority of poroma cells resemble the basal cells of both the dermal ducts and the epidermis, while only minor and variable subpopulations acquire features present in ductal/acrosyringial luminal cells that would be indicative of poral differentiation. "
09/01/2008 - "To investigate the expression of luminal (K77), peripheral (K1) and further discriminatory keratins in two eccrine sweat gland tumours: syringoma, thought to show differentiation towards luminal cells of intraepidermal sweat ducts and eccrine poroma, considered to arise from poroid cells, i.e. "
12/01/1995 - "In both cylindromas and spiradenomas, zonal staining patterns were apparent: modified myoepithelial cells were positive for smooth-muscle-type actin, while the luminal cells mainly expressed ductal markers (CK 6 and CK 19) and, less prominently, secretory-coil markers including CK 7. Eccrine poromas exhibited a widespread reaction for CK 5/6 and EMA, analogous to peripheral dermal duct cells, but focal maturation toward inner-ductal and secretory-coil cells was also demonstrable. "

01/01/1995 - "In order to specify this general assumption, we performed histochemistry and immunohistochemistry on paraffin sections of 29 poromas and eight porocarcinomas. "
04/01/2000 - "Enzymatic cell separation specimens were prepared from paraffin-embedded tissues of 18 sweat gland carcinomas (14 porocarcinomas, one classic eccrine adenocarcinoma, two microcystic adnexal carcinomas and one mostly ductal apocrine carcinoma) and 47 benign sweat gland tumours (three syringocystadenomas, five spiradenomas, 14 cylindromas, three syringomas, seven nodular hidradenomas, 10 cutaneous mixed tumours, four poromas and one apocrine hidrocystoma). "
01/01/1995 - "Formalin-fixed and paraffin-embedded tissue specimens surgically excised from 25 patients with eccrine sweat gland carcinoma (20 cases of eccrine porocarcinoma, four cases of ductal sweat gland carcinoma and one case of malignant clear cell hidradenoma) and 25 patients with eccrine acrospiroma (16 cases of eccrine poroma, four cases of poroid hidradenoma and five cases of clear cell hidradenoma) were used. "
12/01/2004 - "Formalin-fixed, paraffin-embedded tissue sections from 228 previously classified CANs and 27 metastatic adenocarcinomas (17 breast, 4 colon, 2 prostate, 2 ovary, 1 lung, and 1 esophagus) were immunostained with anti-CK 5/6. Anti-CK 5/6 labeled 2 of 2 proliferating trichilemmal tumors, 6 of 6 poromas, 4 of 5 hydrocystomas, 10 of 10 cylindromas, 10 of 10 eccrine acrospiromas, 8 of 10 pilomatricoma, 10 of 10 nevus sebaceus, 9 of 9 desmoplastic trichoepitheliomas, 7 of 7 nevus sebaceus with basal cell carcinomas, 10 of 10 pilar cysts, 14 of 14 trichilemmomas, 10 of 10 syringomas, 6 of 7 chondroid syringomas, 10 of 10 hidradenoma papilliferum, 9 of 9 sebaceus adenomas, 3 of 3 microcystic adnexal carcinomas, 10 of 10 eccrine spiradenomas, 4 of 4 syringocystadenoma papilliferum, 3 of 5 ocular sebaceous carcinomas, 28 of 28 basal cell carcinomas, 16 of 16 trichoepitheliomas, and 33 of 33 trichoepitheliomas with basal cell features. "

06/01/1996 - "In addition, intracellular mucin, inclusive of goblet cells, was seen in 5 of 12 acrospiromas, 1 of 11 poromas, 5 of 8 mixed tumors, 3 of 13 spiradenomas, 1 of 5 cylindromas, 3 of 9 cases of syringocystadenoma papilliferum and 1 of 3 nipple adenomas. "
03/01/1994 - "Various adnexal tumors such as eccrine hidrocystoma, tubular apocrine adenoma, syringocystadenoma papilliferum, eccrine poroma, eccrine spiradenoma, clear cell hidradenoma, mixed cell tumor, eccrine porocarcinoma, extramammary Paget's disease and adenoid cystic carcinoma are DF3 positive, which indicates epithelial mucin production by these tumors."

01/01/1995 - "Formalin-fixed and paraffin-embedded tissue specimens surgically excised from 25 patients with eccrine sweat gland carcinoma (20 cases of eccrine porocarcinoma, four cases of ductal sweat gland carcinoma and one case of malignant clear cell hidradenoma) and 25 patients with eccrine acrospiroma (16 cases of eccrine poroma, four cases of poroid hidradenoma and five cases of clear cell hidradenoma) were used. "
12/01/2004 - "Formalin-fixed, paraffin-embedded tissue sections from 228 previously classified CANs and 27 metastatic adenocarcinomas (17 breast, 4 colon, 2 prostate, 2 ovary, 1 lung, and 1 esophagus) were immunostained with anti-CK 5/6. Anti-CK 5/6 labeled 2 of 2 proliferating trichilemmal tumors, 6 of 6 poromas, 4 of 5 hydrocystomas, 10 of 10 cylindromas, 10 of 10 eccrine acrospiromas, 8 of 10 pilomatricoma, 10 of 10 nevus sebaceus, 9 of 9 desmoplastic trichoepitheliomas, 7 of 7 nevus sebaceus with basal cell carcinomas, 10 of 10 pilar cysts, 14 of 14 trichilemmomas, 10 of 10 syringomas, 6 of 7 chondroid syringomas, 10 of 10 hidradenoma papilliferum, 9 of 9 sebaceus adenomas, 3 of 3 microcystic adnexal carcinomas, 10 of 10 eccrine spiradenomas, 4 of 4 syringocystadenoma papilliferum, 3 of 5 ocular sebaceous carcinomas, 28 of 28 basal cell carcinomas, 16 of 16 trichoepitheliomas, and 33 of 33 trichoepitheliomas with basal cell features. "

02/01/2014 - "Case of multiple apocrine poroma in a patient without receiving radiation or chemotherapy."
11/01/2012 - "We report here four cases of multiple eccrine poromas in patients who were either undergoing, or had undergone, intensive chemotherapy (from 6 months to 16 years prior to onset). "
11/01/2012 - "In addition to radiation therapy, intensive chemotherapy may play a role in the pathogenesis of multiple eccrine poromas even many years after treatment."
02/01/2012 - "Poromatosis, the occurrence of multiple poromas, rarely has been reported in association with hidrotic ectodermal dysplasia, prior radiation therapy, and non-Hodgkin lymphoma occurring after chemotherapy. "

11/01/2012 - "Multiple eccrine poromas, or eccrine poromatosis, may occur in patients who have undergone radiotherapy and/or polychemotherapy. "
01/01/2006 - "Eccrine porocarcinoma arising from preexisting eccrine poroma of the scalp after radiotherapy for cervical cancer."

04/01/2015 - "Multiple poromas following combination chemotherapy and autologous peripheral blood stem cell transplantation."
11/01/2012 - "Multiple eccrine poromas, or eccrine poromatosis, may occur in patients who have undergone radiotherapy and/or polychemotherapy. "

04/01/2015 - "Multiple poromas following combination chemotherapy and autologous peripheral blood stem cell transplantation."

07/01/2012 - "Multiple poromas in a bone marrow transplant recipient: A case report."