IL-6-Producing, Noncatecholamines Secreting Pheochromocytoma Presenting as Fever of Unknown Origin

Figure 2

Axial T1-weighted (a) with fat suppression and T2-weighted (b) MR images show a left adrenal mass (arrow in (a)). The mass has heterogeneous high signal intensity on the T2-weighted image, low signal intensity on T1-weighted image, and no signal dropout on opposed phase T1-weighted image (c). Axial diffusion-weighted image (DWI) shows high signal intensity due to restricted diffusion (d).

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(b)

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(d)