Fever of Unknown Origin: Could It Be a Pheochromocytoma? A Case Report and Review of the Literature

Figure 1

MRI abdomen with and without contrast. A 3.4 x 4.0 x 4.7 cm mass is seen in the left adrenal gland. The lesion demonstrated heterogeneous T2 hyperintense/T1 isointense to muscle signal. The T1 signal of the lesion was hypointense relative to the contralateral right adrenal gland.

(a) T1 precontrast imaging

(b) T1 postcontrast imaging

(c) T2 imaging