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June 1976

Linear Eccrine Poroma

Author Affiliations

From the Department of Dermatology, Kyoto University School of Medicine, Kyoto, Japan.

Arch Dermatol. 1976;112(6):841-844. doi:10.1001/archderm.1976.01630300049011

• A 44-year-old woman had multiple papular lesions of 20 years' duration. The lesions were limited to the right lower extremity and were arranged in a linear fashion. They had the histologic appearance of eccrine poroma; however, thin intertwining strands of tumor cells extended down into the dermis in a pattern similar to that of premalignant fibroepithelioma. Also, bud-like proliferations of tumor cells were attached to the epidermis, analogous to those of superficial basal cell epithelioma. A dilated cystic duct resembling that found in syringoma was present in the upper part of the dermis. To my knowledge, such a linear distribution of multiple eccrine poromas has not been reported in the dermatologic literature.

(Arch Dermatol 112:841-844, 1976)

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