"Apocrine" poroma: review of the literature and case report.
BACKGROUND
"Apocrine" poroma has recently been proposed as a new term to designate a distinctive benign skin neoplasm with differentiation toward the folliculosebaceous-apocrine unit.


METHODS
In support of alternative differentiation, a case of apocrine poroma is reported in a 73-year-old man. A nodule on the right upper abdomen, which was thought clinically to be seborrheic keratosis or basal cell epithelioma, was excised.


RESULTS
Histologically, this neoplasm heterogeniously consisted of poroma-like, sebaceous and follicular epithelial components. Since these components share the common embryologic origin of the folliculosebaceous-apocrine unit, this histologic pattern indicates apocrine differentiation of the tumor.


CONCLUSIONS
This is an additional case to support the term "apocrine" poroma as a diagnosis.
Kamiya
H
H
Department of Dermatology, Gifu University School of Medicine, Japan. kamihide@cc.gifu-u.ac.jp
Oyama
Z
Z
Kitajima
Y
Y
D018250:Acrospiroma / Q000473:pathology* / Q000601:surgery; D000368:Aged; D001050:Apocrine Glands / Q000473:pathology*; D002280:Basal Cell Carcinoma / Q000175:diagnosis; D003937:Diagnosis, Differential; D017789:Granuloma, Pyogenic / Q000175:diagnosis; D006801:Humans; D017492:Keratosis, Seborrheic / Q000175:diagnosis; D008297:Male; D008545:Melanoma / Q000175:diagnosis; D013544:Sweat Gland Neoplasms / Q000473:pathology* / Q000601:surgery; D016896:Treatment Outcome