title: A case of multiple eccrine porocarcinoma with stepping-stone distribution on the foot.
abstract: An 89-year-old woman had three tumors of several years' duration in a stepping-stone distribution on the dorsum of her right foot. The two larger ones were diagnosed histologically as eccrine porocarcinomas, and the smallest of the three shared many clinical similarities with them. Eccrine porocarcinoma is a rare malignant tumor. We describe this peculiar case in which three tumors developed in the same region and discuss how they might have occurred. It is most likely that the three tumors of this case originated from nevoid tumors, and that the individual lesions exhibited malignant changes.
authors.affiliation: Department of Dermatology, Yamaguchi Rosai Hospital, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Ujihara
authors.forename: S
authors.initials: S
authors.lastname: Hamanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Hamanaka
authors.forename: T
authors.initials: T
authors.lastname: Kamei
mesh_terms: D018250:Acrospiroma / Q000473:pathology*; D000368:Aged; D000369:Aged, 80 and over; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004439:Eccrine Glands / Q000473:pathology; D005260:Female; D005534:Foot Diseases / Q000473:pathology*; D006801:Humans; D013544:Sweat Gland Neoplasms / Q000473:pathology*