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June 1958

Eccrine Poroma

Author Affiliations

Houston, Texas

AMA Arch Derm. 1958;77(6):726-729. doi:10.1001/archderm.1958.01560060092020

The term ``eccrine poroma'' was used by Hermann Pinkus et al.1 to describe a solitary tumor occurring on the foot and manifesting a specific histologic appearance. Five cases were included in the original article. This is a report of two additional cases that fulfill the criteria of eccrine poroma. The presentation of the first clinical photograph will add emphasis to the diagnostic features of this disease.

These solitary tumors occur on the nonhairy surfaces of the feet. They vary in size from 2 to 12 mm. in diameter and are raised, papular, or nodular lesions that may resemble a papilloma, wart, pyogenic granuloma, fibroma, or amelanotic melanoma. The lesions are skin-colored to slightly erythematous in appearance, elevated, sharply circumscribed, well defined clinically, and asymptomatic.

Histologically, this lesion falls into a subgroup of the benign solid hidradenomas. The normal epidermis is partly replaced by a massive hyper

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