title: [What is your diagnosis? Keratoacanthoma].
authors.affiliation: Dermatologische Klinik Unitversitätsspital Zürich Gloriastrasse 31 8091 Zürich.
authors.forename: R
authors.initials: R
authors.lastname: Böni
mesh_terms: D000368:Aged; D003937:Diagnosis, Differential; D006229:Hand Dermatoses / Q000175:diagnosis*; D006801:Humans; D007636:Keratoacanthoma / Q000175:diagnosis*; D008297:Male