Fig. 7.

37-year-old woman with serous cystadenoma manifesting as multilocular cystic lesion (lobulated).

A. Contrast-enhanced CT image during venous phase shows multilocular cyst in body of pancreas. Lobulated shape of tumor corresponds to polycystic serous cystadenoma rather than mucinous cystadenoma. B. Endoscopic US depicts tumor composed of multiple cysts. Endoscopic US-guided aspiration showed no malignant cell. C. Ill-defined multilocular cystic tumor with inner smooth and trabeculated surface is seen in gross specimen (white arrows) and confirmed as serous cystadenoma composed of variable sized cysts lined by simple cuboidal cells.