Circumscribed lesion of the third middle anterior and lateral compartment in the left thigh at the level of the medial vastus, hyperintense on STIR with septa and trabeculae, lobulated and well-defined, on T1 is hyperintense in the capsule and hypo-intense in the central portion. In Fat Sat the periphery remains with hyper-intensity. On T2 the lesion remains hyperintense at the periphery with central iso- hypointense. Not an expansive or infiltrative appearance and poor peripheral edema. Note in the subcutaneous tissue slightly hyperintense edema.