MCQ – 89133

Question

A patient undergoes a transsphenoidal approach to remove a pituitary tumor. On the first postoperative day, his urine output is increased, serum osmolality and sodium are increased, and urine specific gravity is decreased. The patient complains of thirst. What is the most likely diagnosis?

A. Syndrome of inappropriate antidiuretic hormone secretion (SIADH)

B.

Diabetes insipidus

C.

Nephrogenic diabetes insipidus due to hypercalcemia

D.

Mineralocorticoid excess

Show Answer

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