title: Rectal cancer.  Early treatment is key.
mesh_terms: D003113:Colonoscopy; D003937:Diagnosis, Differential; D003952:Diagnostic Imaging; D006801:Humans; D009362:Neoplasm Metastasis; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy*