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October 1964

Eccrine Poroma: A Japanese Case Showing Melanin Granules and Melanocytes in the Tumor

Author Affiliations


From the Department of Dermatology, Kanto Communication Hospital.

Arch Dermatol. 1964;90(4):428-431. doi:10.1001/archderm.1964.01600040056012

A Japanese patient with an eccrine poroma was presented. A rice-grain-sized brown pigment spot was on the top of the tumor. Microscopically melanin granules and melanocytes were found localized in a part of the superficial portion of the lesion. Previously reported cases of eccrine poroma have been reviewed especially for the microscopic findings of melanin, melanocytes, glycogen, intercellular bridges, and tonofibrils.