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: Medicine
MEN I syndrome is associated with all of the following, Except 
Select and explain. 
A. Pancreatic Tumors, B. Parathyroid Tumors, C. Pituitary Adenoma, D. Medullary Carcinoma Thyroid
D: Medullary Carcinoma Thyroid
Answer: D: Medullary Carcinoma Thyroid 
Explanation: Answer is D (Medullary Carcinoma Thyroid) Medullary Carcinoma Thyroid is a feature of MEN II syndrome. These tumors are not seen in MEN I syndrome. Parathyroid Tumors, Pancreatic islet cell tumors and Pituitary Tumors are typical of MEN I Syndrome.