The exhibit displays a cystic mass with multiloculation and septation. The wall is thin, however there is thick areas with foci of simple papillary structure project into the lumen. Cystadenoma exhibit smooth outer and inner surface.
Serous cystadenoma show fibrocollagenous wall lined by single layer of bland tubal epithelium. Epithelial proliferation should be less than 10%.
Serous cystadenoma