Rare finding of primary aortoduodenal fistula on single-photon emission computed tomography/computed tomography of gastrointestinal bleeding: A case report

Figure 2 We suggested the patient be admitted longer to find the bleeder. A: Computed tomography angiography arrow showed a small aortic aneurysm at the renal level, in contact with the fourth portion of the duodenum (orange arrow); B: ^99mTc-red blood cell scan showed an active bleeder at the duodenum level in the lateral view at 19 h, but other anterior views did not see any significant bleeding points (blue arrow).