Malignant transformation of a scar in the scalp.
D002294:Carcinoma, Squamous Cell / Q000209:etiology / Q000601:surgery*; D002921:Cicatrix / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012535:Scalp / Q000601:surgery; D012878:Skin Neoplasms / Q000209:etiology / Q000601:surgery*; D012888:Skull Neoplasms / Q000000981:diagnostic imaging / Q000556:secondary