Epithelial Ovarian Carcinoma Types and the Coexistence of Ovarian Tumor Conditions

Table 1

The occurrence of coexisting ovarian tumor conditions in epithelial ovarian cancer according to subtypes and the age at diagnosis in 824 patients.

Ovarian cancer subtype and age category	Total	1 or 2 lesions present*		Ratio of prevalences (95% CI)
	𝑛	𝑛	%*
All subtypes	824	135	16.4
<55 yr	274	62	22.6	1.71 (1.26–2.31)
≥55 yr	550	73	13.3	1
Serous carcinoma	385	42	10.9
<55 yr	113	15	13.3	1.33 (0.74–2.42)
≥55 yr	272	27	9.9	1
Endometrioid carcinoma	113	25	22.1
<55 yr	46	13	28.3	1.58 (0.79–3.14)
≥55 yr	67	12	17.9	1
Mucinous carcinoma	98	28	28.6
<55 yr	47	16	34.0	1.45 (0.76–2.73)
≥55 yr	51	12	23.5	1
Adenocarcinoma	73	12	16.4
<55 yr	17	3	17.6	1.10 (0.33–3.60)
≥55 yr	56	9	16.1	1
Clear cell carcinoma	56	11	19.6
<55 yr	23	7	30.4	2.51 (0.83–7.60)
≥55 yr	33	4	12.1	1
Mixed malignancy	34	5	14.7
<55 yr	11	2	18.2	1.39 (0.27–7.18)
≥55 yr	23	3	13.0	1
Borderline malignancy	18	6	33.3
<55 yr	11	4	36.4	1.27 (0.31–5.20)
≥55 yr	7	2	28.6	1
Other	47	6	12.8
<55 yr	6	2	33.3	3.41 (0.79–14.80)
≥55 yr	41	4	9.8	1

*Lesions present: tumor-like condition (endometriosis, simple cysts, endometriotic cysts, inclusion cysts), benign tumor, and borderline malignancy.
95% CI, confidence interval.