Fig. 2

Dynamic contrast-enhanced computed tomography (CT) findings. a Plain CT scan demonstrated a 5.5-cm cystic mass with solid components inside in the pancreas tail. b Dynamic CT arterial phase scan demonstrated enhancement in the tumor rim and in the edge of the solid components with non-enhanced interior. c Solid components were gradually enhanced from the outside in the portal phase. d The tumor rim and the solid components had isodensity to the surrounding pancreatic parenchyma in the delayed phase