title: Composite mucinous and granulosa-cell tumor of ovary: case report of a unique neoplasm.
abstract: A 63-year-old woman presented with signs and symptoms of an estrogen-producing ovarian tumor. At laparotomy, this tumor proved to be a multilocular right ovarian mass 20 cm in greatest diameter. The cystic spaces were lined by typical benign mucinous epithelium of the endocervical type, while the greatly thickened cyst walls contained a diffuse proliferation of granulosa cells. These two disparate components were intimately mixed at a variably complex interface to form a composite tumor. While composite tumors showing sex cord-stromal and epithelial elements are well documented, they have all, to date, been of moderately to poorly differentiated androblastomatous or Sertoli-Leydig cell type, associated with heterologous mucinous elements of intestinal differentiation. The combination of granulosa-cell tumor with mucinous elements of endocervical or müllerian type has not hitherto been reported and is of uncertain histogenesis.
authors.affiliation: Department of Gynaecological Oncology, King George V Memorial Hospital, Sydney, Australia.
authors.forename: A
authors.initials: A
authors.lastname: Price
authors.forename: P
authors.initials: P
authors.lastname: Russell
authors.forename: P
authors.initials: P
authors.lastname: Elliott
authors.forename: P
authors.initials: P
authors.lastname: Bannatyne
mesh_terms: D002288:Adenocarcinoma, Mucinous / Q000473:pathology* / Q000601:surgery; D005260:Female; D006106:Granulosa Cell Tumor / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007044:Hysterectomy; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology* / Q000601:surgery; D010051:Ovarian Neoplasms / Q000473:pathology* / Q000601:surgery; D010053:Ovary / Q000473:pathology