VMA is excreted in urine in which condition

VMA is excreted in urine in which
condition -
a) Alkaptonuria
b) Phenylketonuria
c) Pheochromocytoma
d) Diabetic ketoacidosis
Correct Answer - C
Answer: C. Pheochromocytoma
VMA is the end product of catabolism of catecholamines.
In pheochromocytoma and neuroblastoma there is excessive
synthesis of catecholamines which causes enhanced synthesis of
VMA and its excretion in the urine.
VMA is the urinary product of both epinephrine and norepinephrine.
It is a good screening test for pheochromocytoma, and is also used
to diagnose and follow up neuroblastoma and ganglioneuroma.