Magnetic resonance imaging for local complications of acute pancreatitis: A pictorial review

Figure 12 36-year-old man with a history of acute pancreatitis and a splenic artery pseudoaneurysm. The involved segment of the splenic artery (arrow, A) and an aneurysmal dilatation structure (large arrow, B) are seen on axial T2-weighted images. On enhanced arterial phase image (C), the enhancement of the pseudoaneurysm cavity (white arrow) and the crescent-form filling defect (black arrow) are similar to the Chinese “Yin-Yang” diagram. This pseudoaneurysm is also illustrated on contrast-enhanced MR angiography (arrow, D).