Pigmented Eccrine Poroma in abdominal region, a rare presentation

Abstract

The eccrine poroma or Hidracanthoma Simplex is a rare benign adnexal tumor of ephitelial cells, with an incidence of 0.001 to 0.008%1. In two-thirds of the patients it appears on the soles and lateral borders of the feet. We report the case of a patient with pigmented eccrine poroma in abdominal skin, of a rare entity presentation with a single report in the literature in that location.

Keywords: Poroma; abdomen; sweat gland neoplasms.

Figure 1. A and B. Hyperpigmented, hyperkeratotic nodule on abdominal skin. lesion Appear to be 0.5 mm long x 0.3mm wide in size

Figure 2.. Hematoxylin and eosin staining, 10X and 40 x; Instrument Olimpus. Panel A and B are 10 x amplification, C and D are 40 x amplification. note proliferation of small keratinocytes emerging from the epithelium with epithelial tracts that anastomose within the dermis, some cavities lined by a eosinophilic cuticle (A,B), Carcinoembryonic Antigen (CEA) highlights positive in the elongated cells lining the cavities (C), the S100 marker is observed in dendritic cells and keratinocytes in the thickness of the cell proliferation (D).