Gynecologic and Obstetric Investigation, 50 Suppl 1(Suppl. 1), 18-25
One hundred forty-seven cases of ovarian endometriosis, encountered from 1976 to 1999 at Tsukuba University Hospital, were studied to clarify the incidence of malignant transformation. There were 18 cases (12.2%) of atypical endometriosis, among which we found a case (5.6%) of ovarian cancer arising from endometriosis not diagnosed before surgery. This is accounted for 0.7% of all ovarian endometriosis cases. Because the incidence was equal to that of the previous reports, it is most likely that the malignant change in ovarian endometriosis occurred in 0.7% of this disease.
Nishida, M., Watanabe, K., Sato, N., & Ichikawa, Y. (2000). Malignant transformation of ovarian endometriosis. *Gynecologic and obstetric investigation*, *50 Suppl 1*(Suppl. 1), 18-25. https://doi.org/10.1159/000052874
Nishida M, Watanabe K, Sato N, Ichikawa Y. Malignant transformation of ovarian endometriosis. Gynecol Obstet Invest. 2000;50 Suppl 1(Suppl. 1):18-25. doi:10.1159/000052874
Nishida, Masato, et al. "Malignant transformation of ovarian endometriosis." *Gynecologic and obstetric investigation*, vol. 50 Suppl 1, no. Suppl. 1, 2000, pp. 18-25.
Adult, Age Distribution, Aged, Biopsy, Needle, Carcinoma, Endometrioid/epidemiology/pathology, Cell Transformation, Neoplastic/pathology, Comorbidity, Endometriosis/diagnosis/epidemiology/pathology, Female, Humans, Middle Aged, Ovarian Diseases/diagnosis/epidemiology/pathology, Ovarian Neoplasms/epidemiology/pathology, Prevalence, Prognosis, Retrospective Studies, Risk Factors,