title: Squamous-cell carcinoma arising in a pilonidal sinus: a case report and review of the literature.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D010864:Pilonidal Sinus / Q000150:complications*; D012445:Sacrococcygeal Region; D012878:Skin Neoplasms / Q000209:etiology* / Q000601:surgery; D016038:Skin Transplantation; D013997:Time Factors