in practice , ectopic secretions are frequent in type 2 polyadenomatosis ( medullary cancer , pheochromocytoma , neurofibroma , marfan 's syndrome , hyperparathyroidism ) contrary to what is observed in type 1 cases ( pituitary , parathyroid , pancreas ) .
C0020502
hyperparathyroidism
C0030518
parathyroid