Case of the month.  Squamous cell carcinoma, keratoacanthoma type.
Cohen
Don
D
D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007636:Keratoacanthoma / Q000175:diagnosis*; D009333:Neck; D012878:Skin Neoplasms / Q000175:diagnosis*