Reason: eval for myopathy, proximal muscle weakness History: eval for myopathy, proximal muscle weakness Note is made of marked atrophy of the gluteal and vastus musculature bilaterally. There is also fatty atrophy of the semimembranosus, biceps femoris and semitendinosus, bilaterally, but to a lesser degree. There is relative sparing of the rectus femoris, gracilis, and to a lesser degree the adductor musculature. There is no definite increased signal abnormality on the fluid sensitive sequences to suggest active inflammation. No bone marrow signal abnormalities are identified. There is a small amount of fluid within both hips which is not necessarily of any clinical significance. There is a small amount peritrochanteric inflammation bilaterally, left greater than right. Although this examination was not protocoled for detailed evaluation of the knees, osteoarthritis affects the knees.
Marked symmetric fatty atrophy of the imaged musculature of the hips and thighs, bilaterally, which is nonspecific, but may reflect the sequela of a long-standing polymyositis/inflammatory myopathy, however, no signal abnormality is identified within the imaged musculature to suggest active inflammation.