Nuclear imaging to characterize adrenal tumors: Comparison with MRI

Figure 2 Right benign non-hypersecreting pheochromocytoma. A: Abdominal posterior scan of I-131 metaiodobenzylguanidine scintigraphy demonstrates abnormal (faint) focal uptake in the right adrenal (black arrow) where a small mass was detected by magnetic resonance (MR); no detectable tracer uptake in the left adrenal bed; B: T2-weighted axial MR with fat-suppression detects a small right adrenal lesion hyperintense compared to liver signal intensity (white arrow).