our development of a radioiodinated guanethidine analog , 131i-mibg , has allowed differentiation of normal adrenal medullary function from bilateral adrenal medullary hyperplasia before the development of hypertension or tachycardia , diagnostic increases in plasma or urinary catecholamines , or abnormal ct scans .
C0018318
guanethidine
C0020538
hypertension