Figure 27 Mucinous cystic neoplasm (MCN) in a 21-year-old woman, without malignancy. (A) Axial T2-weighted, fluid-sensitive MR cholangiopancreatography (MRCP) image shows a large oligocystic lesion arising from the pancreatic body/tail (arrowhead = septation, thick arrow = small locule); (B) delayed-phase image shows very faint enhancement of thin walls of septum and locule. Splenic vein occlusion confirmed by the large, tortuous venous collaterals along the tumor margin (long arrow).