Imaging Features of a Pheochromocytoma

Attenuation in an unenhanced CT

Washout of contast material at 10 minutes(enter from 0 to 100)

Is the adrenal mass oval to round with clear margins?

Is the lesion rapidly enlarging?

Does the mass show a heterogenous texture with cystic areas?

Is the tumor vascular?

Are T2-weighted MRI images markedly hyperintense in relation to the liver?

Are there areas of necrosis and hemorrhage?

Are calcifications present?