52-year-old female with proximal weakness of the lower extremities. Evaluate for progression of fatty atrophy or gadolinium enhancement within the muscles. Left femur:Again seen is severe fatty atrophy of the quadriceps musculature with relative sparing of the rectus femoris, appearing similar to the prior study. There is mild to moderate fatty atrophy of the semitendinosus, appearing similar to the prior study. There is severe fatty atrophy of the remaining hamstring musculature appearing similar to the prior study. There is relative sparing of the adductor musculature as well as the sartorius. There is no enhancement of the remaining musculature to indicate inflammation. The bone marrow signal intensity is within normal limits.Right femur:Again seen is severe fatty atrophy of the quadriceps musculature with relative sparing of the rectus femoris appearing similar to the prior study. There is severe fatty atrophy of the hamstring musculature appearing similar to the prior study. There is relative sparing of the adductor musculature as well as the sartorius. There is no enhancement of the remaining musculature to indicate inflammation. There is a small knee joint effusion as well as mild synovitis of the knee joint. The bone marrow signal intensity is within normal limits.
Severe fatty atrophy of the anterior and posterior musculature of the thighs appearing similar to the prior study. We see no definite progression of atrophy nor do we see gadolinium enhancement to suggest active inflammation.