Skeletal Muscle Involvement in B-Cell Lymphoma: Two Cases Illustrating the Contribution of Imaging to a Clinically Unsuspected Diagnosis

Figure 4

Sagittal T1 (a), axial STIR (b, c), axial T1 fat saturated postcontrast (d, e), and sagittal T1 fat saturated postcontrast (f) images of the involved lower leg in the 55-year-old man with HIV described in case 2. There is marked enlargement of the posterior calf muscles with effacement of the intramuscular fat. The affected muscle demonstrates T2 hyperintense signal and diffuse enhancement on postcontrast sequences. The overall findings should raise the suspicion for an infiltrative process such as lymphoma.

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