Healed keratoacanthoma: the 'moon crater' sign.
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D000368:Aged; D000369:Aged, 80 and over; D002921:Cicatrix / Q000209:etiology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007636:Keratoacanthoma / Q000150:complications* / Q000175:diagnosis*; D007866:Leg; D008297:Male; D009666:Nose; D012871:Skin Diseases / Q000150:complications* / Q000175:diagnosis*