ABSTRACT
I of invasion into surrounding structures, adrenalectomy should be performed via an open approach.
| Preop The preoperative workup of an adrenal mass includes high-resolution cross-sec-
tional imaging and biochemical testing to evaluate for functionality. The most com mon functional tumors and their common screening tests are as follows:
1. Pheochromocytoma-Plasma-free metanephrines or 24 hour urine collection for vanillylmandelic acid, catecholamines, and metanephrines.
