<prompt> Which of the following is the most common malignant germ cell tumor of ovary?Yolk sac tumorDysgerminomaPolyembryomaChoriocarcinoma  <response>: Ans. is b i.e., Dysgerminoma Dvsgerminomao It is the most common malignant germ cell tumor of ovary,o It affects young women and is usually unilateral.o Bilateral tumors are seen in 15 - 20 of the cases.o It is fleshy in consistency.o Histologically it shows presence of lymphocytic infiltration which is considered a good prognostic sign. 