title: [A case of basaloid cell carcinoma of the anal canal in which complete response was obtained by chemoradiation therapy].
abstract: The patient was a 69-year-old woman with a chief complaint of melena, who had a palpable firm mass and tenderness on digital rectal examination. Colonoscopy (CS) showed a depressed hemorrhagic lesion 2cm in diameter on the left anterior wall of the anal canal near the dentate line. Biopsy examination yielded a diagnosis of basaloid cell carcinoma. On the basis of a diagnosis of clinical stage I (T1N0M0) anal canal cancer, chemoradiotherapy was performed. After treatment, no tumor cells were detected on biopsy. Basaloid cell carcinoma, accounting for about 1.6% of anal canal cancers, is rare. Only 4 among 62 reported cases (including our patient) received chemoradiation therapy.
authors: Department of Surgery, Tokyo Metropolitan Health and Medical Public Corporation, Japan. nakagawa@ige.twmu.ac.jp
authors: Ryosuke
authors: R
authors: Nakagawa
authors: Reiki
authors: R
authors: Eguchi
authors: Takehiro
authors: T
authors: Ota
authors: Kenji
authors: K
authors: Yoshitoshi
authors: Takeharu
authors: T
authors: Noguchi
authors: Takami
authors: T
authors: Suzuki
mesh_terms: D000368:Aged; D001005:Anus Neoplasms / Q000628:therapy*; D002294:Carcinoma, Squamous Cell / Q000628:therapy*; D059248:Chemoradiotherapy; D005260:Female; D006801:Humans