This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gynaecological oncology, Subject name: Gynaecology & Obstetrics
Bilateral germ cell tumour is: 
Select and explain. 
A. Dysgerminoma, B. Immature teratoma, C. Embryonal cell carcinoma, D. Endodermal sinus tumour
A: Dysgerminoma
Answer: A: Dysgerminoma 
Explanation: <p> -Germ cell tumors are common in children and young adults and are derived from primordial germ cells of the ovary. -among germ cell tumors, only dysgerminoma is bilateral (15%). Reference : textbook of gynaecology Sheila balakrishnan, 2nd edition, pg no:-282 <\p>