Synchronous primary cancers of the endometrium and ovary: a single institution review of 84 cases.

OBJECTIVES Synchronous primary cancers of the endometrium and ovary are found in 10% of women with ovarian cancer and 5% of women with endometrial cancer. The purpose of this study was to characterize patients diagnosed with synchronous primary cancers of the endometrium and ovary with an emphasis on risk factors. METHODS Between 1989 and 2002, 84 patients with synchronous primary cancers of the endometrium and ovary were identified. Patients with uterine papillary serous carcinoma were excluded. Clinical and pathologic information was obtained from medical records. Parametric methods were used to compare clinical and pathologic features. Kaplan-Meier survival analyses were performed and compared using the log rank test. RESULTS Median age at diagnosis was 50 years. Median body mass index (BMI) was 28 kg/m(2). Fifty-one percent (43/84) of the women were premenopausal and 33% (28/84) were nulliparous. The most common presenting symptom was abnormal vaginal bleeding; in those women with abnormal vaginal bleeding, 69% had stage I ovarian cancer. Ovarian cancer was an incidental finding in 48% of these patients. Sixty-eight percent of patients (57/84) had endometrioid histology of both their endometrial and ovarian cancers. Patients with early stage ovarian cancer tended to have a more favorable prognosis than those with advanced stage disease (median survival not reached in stage I and II versus 66 months in stage III and IV, P = 0.06). Patients with concordant endometrioid histology had a favorable prognosis (median survival 119 versus 48 months in all other groups, P = 0.02). CONCLUSIONS In this large series of patients, women with synchronous primary cancers of the endometrium and ovary were young, obese, nulliparous, and premenopausal. Patients with concordant endometrioid tumors of the endometrium and ovary had a favorable prognosis, with median survival approaching 10 years.