title: UNCOMMON NONKERATINIZING CANCERS OF THE ANAL CANAL AND PERIANAL REGION.
mesh_terms: D001003:Anal Canal; D001005:Anus Neoplasms; D006801:Humans; D009369:Neoplasms; D010336:Pathology; D010502:Perineum
keywords: ANUS NEOPLASMS; PATHOLOGY