Keratoacanthoma.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007636:Keratoacanthoma / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D012878:Skin Neoplasms / Q000175:diagnosis*