title: [Trivial injury to the sole of the foot].
abstract: A 67-year-old male patient noticed a foreign body sensation following a trivial trauma to the sole of the left foot approximately 4 months before presentation. The existing skin alteration had been self-treated with pumice stone and an unidentifiable wart tincture. The examination revealed an approximately 2 cm in diameter macula on the left heel with a zonal construction. The periphery was formed by a polycyclic dark brown ring which enclosed a reddish skin colored macula with several minute erosions. Dermatoscopy revealed an unspecific pattern with polymorphic vessels in the center. The peripheral ring showed radially running streaks as well as a parallel track-like pattern in one region. Histology revealed this to be an acral melanoma. A melanoma should always be included in the differential diagnostic considerations of atypical acral lesions. A biopsy should always be carried by unclear clinical and light microscopical findings out to enable a final diagnosis.
authors.affiliation: Hautarztpraxis Dr. Kainz, Leibnitz, Österreich.
authors.forename: J T
authors.initials: JT
authors.lastname: Kainz
authors.forename: R
authors.initials: R
authors.lastname: Hofmann-Wellenhof
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D005533:Foot Dermatoses / Q000473:pathology*; D018409:Foot Injuries / Q000473:pathology; D006801:Humans; D008297:Male; D008545:Melanoma / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*