Active gastrointestinal diverticulum bleeding diagnosed by computed tomography angiography

Figure 1 Imaging of case 1. A: Computed tomography (CT) angiography revealed contrast extravasation in a jejunal diverticulum (arrow); B: CT angiography showed the blood supply for the jejunal diverticulum source was from a branch of the superior mesenteric artery (arrow); C: Multiple diverticula in a 30 cm segment of the jejunum.

Figure 2 Imaging of case 2. A: Abdominal computed tomography (CT) revealed contrast extravasation in the ascending colon (arrow); B: CT angiography revealed bleeding from the intramural branches of the marginal artery supplying the ascending colon (arrow); C: Angiography failed to reveal the precise location of the bleeding; D: Emergent colonoscopy revealed multiple diverticula in the middle part of the ascending colon without definite bleeding vessels identified (arrow).