Sphincter preserving surgery for rectal neoplasia.
D000005:Abdomen / Q000601:surgery; D003106:Colon / Q000601:surgery; D003125:Colostomy / Q000379:methods; D006801:Humans; D008722:Methods; D012004:Rectal Neoplasms / Q000601:surgery*; D012007:Rectum / Q000601:surgery; D012447:Sacrum / Q000601:surgery