Which of the following statements is true with respect to pheochromocytoma?
A. Pheochromocytoma associated with MEN IIa is usually unilateral and rarely malignant; therefore, unilateral exploration through a posterior flank incision is usually sufficient
B. Clonidine fails to suppress basal plasma-catecholamine levels in patients with pheochromocytoma
C. NP-59 (131I-6 b-iodomethyl-19-norcholesterol) is taken up as cholesterol by the adrenal medulla
D. The ratio of plasma 3,4-dihydroxyphenoglycol (DHPG) to norepinephrine is generally elevated in patients with pheochromocytoma compared to patients with essential hypertension
Answer:B
Which of the following statements is true with respect to pheochromocytoma?
A. Pheochromocytoma associated with MEN IIa is usually unilateral and rarely malignant; therefore, unilateral exploration through a posterior flank incision is usually sufficient B. Clonidine fails to suppress basal plasma-catecholamine levels in patients with pheochromocytoma C. NP-59 (131I-6 b-iodomethyl-19-norcholesterol) is taken up as cholesterol by the adrenal medulla D. The ratio of plasma 3,4-dihydroxyphenoglycol (DHPG) to norepinephrine is generally elevated in patients with pheochromocytoma compared to patients with essential hypertension