8462/1 Atypical proliferative papillary serous tumor


ICD-O-3 topography code: C56

A cystic serous epithelial neoplasm with low malignant potential arising from the ovary. Cases with identical morphology have been described arising from the peritoneum as well. It is characterized by an atypical epithelial proliferation and a papillary growth pattern. There is no evidence of destructive stromal invasion.