This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Surgery
Suprasellar calcification with polyuria seen in - 
Select and explain. 
A. Langerhan cell histocytosis, B. Medulloblastoma, C. Pinealoma, D. Craniopharyngioma
D: Craniopharyngioma
Answer: D: Craniopharyngioma 
Explanation: A suprasellar calcification is typical of craniopharyngioma Polyuria is d/t diabetes insipidus caused d/t compression by the tumor over pituitary. (Schwaz 7/e p1629 writes "Clinically, patients with suprasellar tumors typically present with diabetes insipidus, visual difficulties, or endocrinopathy.") Ref : Sutton's Radiology 7/e p1628