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
In a case of Dysgerminoma of ovary one of the following tumor markers is likely to be raised; 
Select and explain. 
A. Serum HCG, B. Semm alpha fetoprotein, C. Serum lactic dehydrogenase, D. Semminhibin
C: Serum lactic dehydrogenase
Answer: C: Serum lactic dehydrogenase 
Explanation: - dysgerminoma is the most common among the malignant germ cell tumors accounting for 40%. - tumors markers like placental alkaline phosphatase and lactic dehydrogenase may be elevated in dysgerminoma. Reference : textbook of gynaecology Sheila balakrishnan, 2nd edition, pg no: 283 <\p>