Giant cell tumor of the ovary

A 31 year old woman with primary sterility was found, at operation, to have endometriosis of the Fallopian tubes and a giant cell tumor of the ovary, histologically indistinguishable from giant cell tumor of bone. The tumor is considered to be primary and benign, with a follow-up period of 4 1/2 years and no signs of recurrence or malignancy.