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: Pediatrics
One of your patients on examination was found to have macro orchidism. All the following conditions are associated with macro orchidism, EXCEPT: 
Select and explain. 
A. Fragile X syndrome, B. Hypothyroidism, C. Hypopituitarism, D. Idiopathic sexual precocity
C: Hypopituitarism
Answer: C: Hypopituitarism 
Explanation: Hypopituitarism is associated with micro orchidism. All the other conditions mentioned above are associated with macro orchidism. Also know Causes of micro orchidism Klinefelters syndrome Laurence - Moon biedl syndrome Hypopituitarism Rudimentary testes syndrome Ref: Meharban Singh, Edition 3, Page 110.