Pigmented eccrine poroma with squamous differentiation / 대한피부과학회지

ABSTRACT

Eccrine poroma is a common adnexal neoplasm that differentiated toward the acrosyringium, the intraepidermal portion of the eccrine sweat duct. This disease appear clinically as skin-colored or brownish nodule, but the lesion can be pigmented when it contains melanocytes and melanin. In that case, it can be very similar to melanoma. Futhermore, eccrine poroma rarely shows squamous differentiation histologically. Nevertheless, it should be differentiaed from basalcell carcinoma and seborrheic keratosis when it shows squamous differentiation. We report a case of pigmented eccrine poroma with squamous differentiation in a 42-year-old male.