Ovarian germ cell tumors: Pathology, epidemiology, clinical manifestations, and diagnosis – UpToDate
Ovarian germ cell tumors (OGCTs) are derived from primordial germ cells of the ovary. They may be benign or malignant. These neoplasms comprise approximately 20 to 25 percent of ovarian neoplasms overall, but account for only an approximate 5 percent of all malignant ovarian neoplasms. OGCTs arise primarily in young women between 10 and 30 years of age and represent 70 percent of ovarian neoplasms in this age group.