ABSTRACT
Endocrine tumors of the adrenal arise from either the cortex or the medulla. Magnetic resonance imaging (MRI) is most commonly used to investigate a clinical syndrome caused by hormonal hypersecretion or to study an adrenal mass detected on some other imaging test. Functional tumors are usually smaller and more difficult to detect than nonfunctional tumors, which usually present at a later stage with local complications of a mass or metastatic disease. Less commonly, patients with a known primary malignancy are evaluated for possible adrenal metastasis (1-4).
