This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pathology (Carcinoma Ovary), Subject name: Gynaecology & Obstetrics
"Schiller Dual" bodies are seen in 
Select and explain. 
A. Endodermal sinus tumor, B. Granulosa cell tumor, C. Dysgerminoma, D. Dermoid
A: Endodermal sinus tumor
Answer: A: Endodermal sinus tumor 
Explanation: Ans. a (Endodermal sinus tumor) (Ref. Dutta Gynecology 4th/pg. 354)SCHILLER-DUVAL BODIES are characteristic structures resembling fetal glomeruli composed of a central blood vessel surrounded by embryonal cells lying within a space also lined by embryonal cells. They are seen in endodermal sinus tumors (yolk sac tumors). AFP is its tumor marker.