Clinically and/or histologically pigmented poromas in Caucasian patients.

Abstract

AIM:

Pigmented poromas are rarely reported and considered to be more common in non-white people and on non-acral sites. Objective of the present study was to report our cases of pigmented poromas with particular attention to the presence of clinical and/or microscopic evidence of pigmentation, their characteristics and the diagnostic pitfall with other pathologies.

METHODS:

All the histologically confirmed poromas observed from January 1994 to July 2012 were considered. Clinic-epidemiological data were collected. The presence of clinical pigmentation was recorded as well as the presence of melanin pigmentation or melanocytes in the histologic specimens.

RESULTS:

One hundred and one patients with poromas were collected. All the patients were Caucasians. All the lesions were solitary. Only three patients had a clinically visible pigmented poromas. In eight cases the presence of melanin and melanocytes did not produce a clinically visible pigmentation. All the poromas with pigmentation did not occur on palmo-plantar surfaces.

CONCLUSION:

Pigmented poromas may be observed even in Caucasian patients and their clinical aspect mimic basal cell carcinoma and/or melanoma. The presence of pigment visible at the histology may not be observed in the clinical expression. The absence of pigmentation on palmo-plantar location is confirmed in all the reported cases.

• Authors: R Betti, C Bombonato, A Cerri, L Moneghini, P Abramo, S Menni
• Journal: Giornale italiano di dermatologia e venereologia : organo ufficiale, Societa italiana di dermatologia e sifilografia (G Ital Dermatol Venereol) Vol. 149 Issue 3 Pg. 341-6 (Jun 2014) ISSN: 0392-0488 [Print] Italy
• PMID: 24819762 (Publication Type: Case Reports, Journal Article)

Topics

• Adult
• Aged
• Aged, 80 and over
• Back (pathology)
• Ear Auricle (pathology)
• Female
• Humans
• Male
• Melanocytes (pathology)
• Middle Aged
• Poroma (pathology, surgery)
• Skin Pigmentation
• Sweat Gland Neoplasms (pathology, surgery)
• Treatment Outcome
• White People