PMC7829329_01
Muscle MRI of upper legs. In this representative transverse axial T1 weighted image from the patient, increased signal intensity is seen in the bilateral adductor magnus, semitendinosus, and semimembranosus muscles.
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F1
MRI of the upper legs showed fatty infiltration of posterior hamstring muscles with relative sparing of anterior leg compartment, iliopsoas, hip flexors (Figure 1).