Persistent Mongolian spot in the adult.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005006:Ethnicity; D006801:Humans; D007223:Infant; D007564:Japan; D008297:Male; D009365:Neoplasm Regression, Spontaneous / Q000453:epidemiology* / Q000473:pathology; D009508:Nevus, Pigmented / Q000453:epidemiology* / Q000473:pathology; D013997:Time Factors