The Association between Primary Endometrioid Carcinoma of the Ovary and Synchronous Malignancy of the Endometrium

Table 2

Association among 157 cases between subtype of epithelial ovarian cancer and second endometrial cancer.

Histology of ovarian tumors	Observed	Expected	O/E^∗∗	95%-CI
Adenocarcinoma	49	42.82	1.14	(0.85–1.51)
Clearcell carcinoma	3	7.57	0.40	(0.08–1.16)
Endometrioid carcinoma	53	14.93	3.55	(2.66–4.64)
Mucinous carcinoma^∗	7	19.30	0.36	(0.15–0.75)
Serous carcinoma^∗	27	52.62	0.51	(0.34–0.75)
Others	18	19.75	0.91	(0.54–1.44)

∗including borderline malignancies.
∗∗Observed versus Expected number of cases of synchronous endometrial cancer.