Synonyms

Endometrioid cystadenoma, borderline malignancy
Endometrioid tumor of low malignant potential
Atypical proliferative endometrioid tumor

Definitions

Fallopian tube and Uterine ligaments
ICD-O-3 topography code:	C57

A neoplasm of low malignant potential arising from the ovary. It is characterized by the presence of glandular or cystic spaces which contain atypical glandular epithelial cells resembling endometrial cells. The surrounding ovarian stroma is often fibrotic. There is no evidence of stromal invasion.

Ovary
ICD-O-3 topography code:	C56

A neoplasm of low malignant potential arising from the ovary. It is characterized by the presence of glandular or cystic spaces which contain atypical glandular epithelial cells resembling endometrial cells. The surrounding ovarian stroma is often fibrotic. There is no evidence of stromal invasion.