title: Rectum.
authors: Department of Colorectal Surgery, Singleton Hospital, Sketty, Swansea, United Kingdom.
authors: J
authors: J
authors: Beynon
mesh_terms: D006801:Humans; D008207:Lymphatic Metastasis / Q000000981:diagnostic imaging; D009361:Neoplasm Invasiveness / Q000000981:diagnostic imaging; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging; D012002:Rectal Diseases / Q000000981:diagnostic imaging*; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging; D012007:Rectum / Q000000981:diagnostic imaging*; D014463:Ultrasonography