Extraovarian mucinous metaplasia in a patient with bilateral mucinous borderline ovarian tumors: a case report.

We present a case of a 54-year-old woman with bilateral borderline mucinous ovarian tumors that contained multiple types of epithelia. Widespread müllerian abnormalities were present and included endometrial mucinous metaplasia, mucinous epithelial inclusions with papillary changes in pelvic lymph nodes, and papillary mucinous proliferation within endocervical glands. We postulate that the widespread abnormalities present in this patient could represent precursor changes to the multifocal cancers previously described in patients with similar tumors.