Figure 20.

Pancreatic regional portal hypertension in a 36-year-old man with a history of acute pancreatitis. A: Axial T1-weighted image obtained with intravenous contrast material reveals enhancement of numerous and circuitous veins (white arrows) around the gastric fundus, and splenic veins (black arrows) adjacent to the splenic hilum; B: Magnetic resonance angiography depicts the establishment of numerous and conspicuous collateral vessels due to gastric fundic varices (white arrows) and a pseudoaneurysm (black arrows). St: Stomach.