Thigh mass There is diffusely increased T2 signal involving the majority of the vastus medialis muscle which appears slightly enlarged compared to the remaining thigh musculature. Following contrast enhancement, there is mild diffuse enhancement within the midportion of the muscle although there is no discrete mass identified. Further inferiorly is additional enhancement which again appears nonmass-like in nature. There is no discrete neurovascular involvement or mass effect.The underlying marrow signal of the femur and remaining visualized osseous structures is normal. The remaining posterior compartment and subcutaneous signal is also unremarkable. There is mild increased signal within the right gluteus muscle as well.
Nonspecific increased signal and mild enhancement of the vastus medialis muscle without discrete mass lesion or mass effect. Although nonspecific, this may reflect a myositis although correlation with laboratory values and serial imaging may be of benefit.