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Fig. 3C. 84-year-old man with adrenal adenoma that was characterized
using chemical shift MRI but not with unenhanced CT. Axial opposed-phase MR
image shows that mass is isointensehypointense with respect to spleen.
For this lesion, adrenal-to-spleen chemical shift ratio and signal-intensity
index were 0.32 and 68%, respectively. Qualitative analysis identified signal
loss on opposed-phase image. This mass has been stable for 5 years and is
consistent with lipid-rich adrenal adenoma.