This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Male Genital Tract, Subject name: Pathology
A glomerulus-like structure composed of central blood vessel enveloped by germ cells within a space lined by germ cells, is seen in - 
Select and explain. 
A. Sertoli-Leydig cell tumor, B. Granulosa cell tumor, C. Endodermal sinus tumor, D. Sex cord tumor with annular tubules
C: Endodermal sinus tumor
Answer: C: Endodermal sinus tumor 
Explanation: Ans. (c) Endodermal sinus tumor(Ref: Robbins 9th/pg 977)Yolk sac tumor or endodermal sinus tumor show Schiller-Duval bodies or glomeruloid structures