Figure 4.

A: Coronal T1-weighted section showing the presence of a colleciton in the lateral aspect of the thigh, isointense to the muscle (arrows). B: Coronal STIR section showing hyperintense collection associated with edema on the thigh muscle (arrows). C: Sagittal STIR section showing hyperintense collection with a hypointense capsule in the anterolateral aspect of the thigh. D,E: Axial, T1-weighted sections acquired before and after intravenous contrast injection, showing the presence of a collection isointense to the muscle, with contrast uptake by the capsule (thin arrow) and by the muscle (gross arrow), the latter inferring the presence of muscle edema/myositis.