Finding-the-Path: Case 21
History
An 84-year-old man presents with rectal bleeding. On examination, bright red blood is found in the rectum. Supine and upright radiographs of the abdomen are normal.
Which study do you request next?
Upper GI series
Barium enema
Abdominal scintigraphy using Tc-99m labelled red blood cells
Computed tomogram of the abdomen
Ultrasound
