Staging and Functional Characterization of Pheochromocytoma and Paraganglioma by 18 F-Fluorodeoxyglucose ( 18 F-FDG)

F-FDG vs 123 I-MIBG: difference = 32.5%, 95% CI = 22.3% to 42.5%, P < .001; CT/MRI vs 123 I-MIBG: difference = 24.4%, 95% CI = 11.3% to 31.6%, P < .001). For bone metastases, 18 F-FDG was more sensitive than CT/MRI (sensitivity of 18 F-FDG = 93.7%; of CT/MRI = 76.7%; difference = 17.0%, 95% CI = 4.9% to 28.5%, P = .013).