title: RARE NONKERATINIZING MALIGNANCIES OF ANAL REGION; PATHOLOGIC FEATURES.
mesh_terms: D001005:Anus Neoplasms; D002280:Basal Cell Carcinoma; D002294:Carcinoma, Squamous Cell; D002295:Carcinoma, Transitional Cell; D003937:Diagnosis, Differential; D006801:Humans; D008197:Lymph Node Excision; D008545:Melanoma; D009369:Neoplasms; D010145:Paget Disease, Extramammary; D010336:Pathology; D012004:Rectal Neoplasms; D013514:Surgical Procedures, Operative
keywords: ANUS NEOPLASMS; CARCINOMA, BASAL CELL; CARCINOMA, EPIDERMOID; CARCINOMA, TRANSITIONAL CELL; DIAGNOSIS, DIFFERENTIAL; LYMPH NODE EXCISION; MELANOMA; PAGET'S DISEASE, EXTRA-MAMMARY; PATHOLOGY; RECTAL NEOPLASMS; SURGERY, OPERATIVE