Clinical analysis of ovarian epithelial carcinoma with coexisting pelvic endometriosis

Objectives To explore the differences between women with endometiosis associated ovarian cancer and typical epithelial ovarian cancer. Study Design The medical charts of total 226 patients with epithelial ovarian cancer treated at Peking Union Medical College Hospital between March 2011 and March 2012 were reviewed. Histology evaluation determined endometiosis associated ovarian cancer (n = 17) or nonendometiosis associated ovarian cancer (n = 209). Results Compared with nonendometiosis associated ovarian cancer, patients with endometiosis associated ovarian cancer were proved: (1) to be younger and more likely to be premenopausal at diagnosis of epithelial ovarian cancer (P = .03 and .005, respectively); (2) to have lower preoperative serum level of Ca125 (mean: 122.9 vs 1377.5 U/mL, P < .001) and more likely to display normal Ca125 level (P < .001); (3) to be identified at the earlier stage (stage I, P < .001); (4) to have completely different distribution of histological subtypes (significant overrepresentation of clear cell and endometrioid carcinoma). Conclusion As such, patients with endometiosis associated ovarian cancer differ from nonendometiosis associated ovarian cancer in many of their critical clinical and biologic characteristics. To explore the differences between women with endometiosis associated ovarian cancer and typical epithelial ovarian cancer. The medical charts of total 226 patients with epithelial ovarian cancer treated at Peking Union Medical College Hospital between March 2011 and March 2012 were reviewed. Histology evaluation determined endometiosis associated ovarian cancer (n = 17) or nonendometiosis associated ovarian cancer (n = 209). Compared with nonendometiosis associated ovarian cancer, patients with endometiosis associated ovarian cancer were proved: (1) to be younger and more likely to be premenopausal at diagnosis of epithelial ovarian cancer (P = .03 and .005, respectively); (2) to have lower preoperative serum level of Ca125 (mean: 122.9 vs 1377.5 U/mL, P < .001) and more likely to display normal Ca125 level (P < .001); (3) to be identified at the earlier stage (stage I, P < .001); (4) to have completely different distribution of histological subtypes (significant overrepresentation of clear cell and endometrioid carcinoma). As such, patients with endometiosis associated ovarian cancer differ from nonendometiosis associated ovarian cancer in many of their critical clinical and biologic characteristics.