References
1. Sankaranarayanan R, Ferlay J. Worldwide burden of gynaecological cancer: the size of the problem. Best Pract Res Obstet Gynaecol. 2006;20:207-225.
2. Oehler MK, Wain GV, Brand A. Gynaecological malignancies in pregnancy: a review. Aust N Z J Obstet Gynecol 2003;43(6):414-20.
3. Gezginc K, Karatayli R, Yazici F, Acar A, Celik C, Capar M. Ovarian cancer during pregnancy. International Journal of Gynae-cology and Obstetrics 2011;115:140-143.
4. Amant F, Calsteren KV, Halaska MJ, Beijnen J, Lagae L, Hanssens M, et al. Gynecological cancers in pregnancy: Guidelines of a international consensus meeting. International Journal of Gyneco-logical Cancers 2009;19(S1):S1-S9.
5. Zhao XY, Huang HF, Lian LJ, Lang JH. Ovarian cancer in pregnancy: a clincopathological analysis of 22 cases and review of literature. Int J Gynecol Cancer 2006;16(1):8-16.
6. Beral V, Fraser P, Chilvers C. Does pregnancy protect against ovarian cancer? Lancet 1978;1:1083-6.
7. Gwinn ML, Lee NC, Rhodes PH, Layde PM, Rubin GL.Pregnancy, breast feeding, and oral contraceptives and the risk of epithelial ovarian cancer. Journal of Clinical Epidemiology 1990;43(6):559-68.
8. Whittmore AS, Harris R, Itnyre J. Characteristics Relating to Ovarian Cancer Risk: Collaborative Analysis of 12 US Case -Control Studies Am J Epidemiol 1992; 136: 1184–1203.
9. Machado F, Vegas C, Leon J, et al. Ovari-an cancer during pregnancy: analysis of 15 cases. Gynecol Oncol 2007;105:446-50.
10. Takeuchi T, Suzuki S, Hayashi Z, et al. Primary ovarian tumor undergoing surgical management during pregnancy. J Nippon Med Sch 2002;69:39-42.
11. Nelson L, Ekbom A, Gerdin E. Ovarian cancer in young women in Sweden, 1989-1991. Gynecol Oncol 1999;74(3):472-6.
12. Zemlickis D, Lishner M, Degendorfer P, Panzarella T, Sutcliffe SB, Koren G. Fetal outcome after in utero exposure to cancer chemotherapy. Arch Intern Med 1992;152(3):573-6.
13. Grendys Jr EC, Barnes WA. Ovarian cancer in pregnancy. Surg Clin North Am 1995;75(1):1-14.
14. Jubb ED. Primary ovarian cancer in pregnancy. Am J Obstet Gynecol 1963;85:345–54.
15. Copeland LJ, London MB. Malignant disease in pregnancy. In: Gabbe SG, Niebyl JR, Simpson JL, editors. Obstetrics, Normal and Problem Pregnancies, 3rd edition. New York, NY: Churchill Livingstone; 1996. pp. 1155–81.
16. Partridge EE, Phillips JL, Menck HR. The National Cancer Database report on ovarian cancer treatment in United States hospitals. Cancer 1996;78:2236–46.
17. Kwon YS, Mok JE, Lim KT, Lee IH, Kim KH, Lee KH, et al. Ovarian cancer during pregnancy: clinical and pregnancy outcome. J Korean Med Sci 2010;25 (2);230-4.
18. Halila H, Stenman U, Seppala M. Ovarian cancer antigen Ca125 levels in pelvic inflammatory disease and pregnancy. Cancer 1986;57:1327-9.
19. Kobayashi F, Sagawa N, Nakamura K, Nonogaki M, Ban C, Fujii S, et al. Mechanism and clinical significance of elevated Ca125 levels in the sera of pregnant women. Am J Obstet Gynecol 1989;160:563–6.
20. Creasman WT, Rutledge F, Smith JP. Carcinoma of the ovary associated with pregnancy. Obstet Gynecol 1971;38:111–16.
21. Husseinzadeh N, Sibai B, Siddiqi TA. Ovarian tumors in pregnancy: Diagnosis and management. Am J Perinatol 2012;29:327-34.
22. Palmer J, Vatish M, Tidy J. Epithelial ovarian cancer in pregnancy: a review of the literature. BJOG 2009;116(4): 480–491.
23. Novak ER, Lambrou CD, Woodruff JD. Ovarian tumors in pregnancy. An ovarian tumour registry review. Obstet Gynecol 1975;46:401–6.
24. Behtash N, Karimi ZM, Modares GM, Ghaemmaghami F, Mousavi A, Ghotbizadeh F. Ovarian carcinoma associated with pregnancy: a clincopathologic analysis of 23 cases and review of literature. BMC Pregnancy Childbirth.2008;8:3.