The most common site of ectopic pheochromocytoma is: (A) Bladder, (B) Filum terminale, (C) Celiac plexus, (D) Organ of Zuckerkandl
Answer is B. Pheochromocytoma is a chromaffin cell tumor commonly located at adrenal medulla. Ectopic pheochromocytoma (EP) is considered as pheochromocytomalocated at extra-adrenal site, which usually lies at para-aoic region Ref ganong's review of medical physiology 25e