Suprasellar calcification with polyuria seen in -: (A) Langerhan cell histocytosis, (B) Medulloblastoma, (C) Pinealoma, (D) Craniopharyngioma
Answer is D. 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