Acne keloidalis.
D000328:Adult; D002921:Cicatrix; D005499:Folliculitis / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D009333:Neck; D012867:Skin / Q000473:pathology; D016038:Skin Transplantation; D014182:Transplantation, Autologous