Gastrointestinal bleeding as seen by the proctologist.
D001003:Anal Canal / Q000601:surgery*; D003107:Colorectal Surgery; D013505:Digestive System Surgical Procedures; D006471:Gastrointestinal Hemorrhage; D041981:Gastrointestinal Tract; D006470:Hemorrhage; D006801:Humans; D007422:Intestines; D012007:Rectum / Q000601:surgery*
ANUS/surgery; GASTROINTESTINAL SYSTEM/hemorrhage; RECTUM/surgery