title: Anterior resection for cancer of the upperrectum and lower sigmoid: a comparison with sigmoid resection.
mesh_terms: D012809:Colon, Sigmoid; D006801:Humans; D009369:Neoplasms; D012004:Rectal Neoplasms; D012007:Rectum; D012811:Sigmoid Neoplasms
keywords: RECTUM/neoplasms; SIGMOID/neoplasms