Which of the following does not belong to Wermer's syndrome?: (A) Pheochromocytoma, (B) Parathyroid hyperplasia, (C) Prolactinoma, (D) Pancreatic hyperplasia
Answer is A. MEN 1 / Wermer's syndrome :

Parathyroid hyperplasia / adenoma.
Pitutary hyperplasia - Prolactinoma.
Pancreatic hyperplasia - Gastrinoma > Insulinoma > Glucagonoma.