Eccrine Poroma with an Atypical Clinical Presentation Mimicking Breast Cancer

Poromas are benign adnexal neoplasms of either eccrine or apocrine differentiation. Poromas usually present as small solitary tumours on acral sites. Larger lesions and occurrence on other parts of the body are uncommon clinically and difficult to diagnose without histology. There are a few reports of poroma arising on the breast. We report a case of eccrine poroma located to the areola of an eighty years old woman presenting as a breast lump that clinically resembled a carcinoma. The aspiration cytology failed to make a definite diagnosis. The histopathology demonstrated apparent continuity of a benign poroma with the epidermis.