This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, 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: Characteristics given in the question is of Schiller Duval bodies.
Schiller Duval body are structures that resemble endodermal sinuses which consist of a mesodermal core with a central capillary and a visceral and parietal layer of cells resembling primitive glomeruli.
Schiller Duval bodies are characteristics of endodermal sinus tumor (yolk sac tumor).