This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary tract, Subject name: Pathology
[{'content': 'Endodermal sinus tumor is characterised by \nSelect and explain. \nA. Cal Exner body, B. Psammoma bodies, C. Schiller Duval bodies, D. Homer wright body', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Refer Robbins page no 977Also known as endodermal sinus tumor, yolk sac tumor is of interest because it is the most common testicular tumor in infants and children up to 3 years of age. In this age group it has a very good prognosis. In adults the pure form of this tumor is rare; instead, yolk sac elements frequently occur in combination with embryonal carcinoma.', 'role': 'assistant'}]