Reason: concern for polymyositis History: complains for polymyositis Left femur:There is a moderate amount of diffuse increased signal abnormality on fluid sensitive sequences within the gluteal, quadriceps, hamstring, and adductor musculature. No focal fluid collection is identified. There is mild fatty atrophy of the hamstring and gluteal musculature. There is nonspecific subcutaneous edema most pronounced along the anterior and medial aspect of the thigh. No definite abscess is identified within the limitations of this noncontrast examination. No bone marrow signal abnormality is identified. There is a small amount of fluid within the left hip and knee which is not necessarily of any clinical significance.Right femur:There is a moderate amount of diffuse increased signal abnormality on fluid sensitive sequences within the gluteal, quadriceps, hamstring, and abductor musculature. There is mild fatty atrophy of the hamstring and gluteal musculature. No focal fluid collection is identified. There is nonspecific subcutaneous edema most pronounced along the lateral aspect of the thigh. Some of this edema becomes more confluent along the lateral aspect of the vastus lateralis at the level of the mid diaphysis of the femur, however, no definite capsulated collection is identified. However, evaluation for abscess is limited on this noncontrast examination. No bone marrow signal abnormality is identified. There is a small amount of fluid within the left hip and knee which is not necessarily of any clinical significance.
Diffuse bilateral signal abnormality/inflammatory change within the musculature of the left and right thigh which is nonspecific but consistent with the patient's history of polymyositis. Nonspecific bilateral subcutaneous edema.