the usefulness of fiberoptic endoscopy , performed to identify the cause ( s ) of gastrointestinal bleeding in cancer patients was assessed by ( 1 ) identifying the clinical presentation of bleeding , ( 2 ) evaluating the safety and diagnostic yield of fiberoptic endoscopy , ( 3 ) determining the frequency distribution of causes of bleeding , and ( 4 ) evaluating the clinical course following acute gastrointestinal bleeding in a cancer patient population .
C0017181
gastrointestinal bleeding
C0019080
bleeding