Which one of the following imaging modalities is most sensitive for evaluation of extra- adrenal phaeochromocytoma.
D i.e. MIBI Scan Pheochromocytoma arises from paraganglion cellsQ (autonomic nervous system). M. C. site of origin is adrenal medullaQ M. C. extra-adrenal site is paraveebral sympathetic ganglion in organ of zuckerkandlQ (near aoic bifurcation) Investigation of choice for adrenal pheochromocytoma is CT ScanQ followed by MRI (d/t low cost) Investigation of choice for locally recurrent, metastatic, Ectopic & Extra - adrenal pheochromocytoma is metaiodobenzylaguanidine (MIBG) ScanQ (using P23 or 1131). Sensitivity of imaging modalities
Ultrasound
CT
MRI
MIBG scan