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
[{'content': 'A patient meets with an accident with resultant transaction of the pituitary stalk; what will NOT occur: \nSelect and explain. \nA. Diabetes mellitus, B. Diabetes insipidus, C. Hyperprolactinemia, D. Hypothyroidism', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Diabetes Mellitus): Insulin is a pancreatic hormone, not under the control of pituitary. Transection of the pituitary stalk would therefore in no way affect glucose levels or lead to diabetes mellitus.', 'role': 'assistant'}]