Leg pain and swelling Within the subcutaneous tissues of the proximal right thigh is an ill-defined collection measuring approximately 11 x 2 x 7.5 cm in the greatest transaxial and craniocaudal dimensions. A distinct fluid/fluid level is identified on the axial sequences with the more superficial/anterior portion demonstrating high T1 signal reflecting hemorrhagic contents. Following contrast administration, there is no central or solid enhancement identified. These findings most likely represent a resolving subcutaneous hematoma. There is a mild amount of subcutaneous edema tracking inferiorly along the thigh.The underlying marrow signal of the femur is normal. There is a small amount of increased T2 signal involving the proximal and posterior aspect of the vastus lateralis.On the large field-of-view images, there is subcutaneous edema along the lateral portion of the left thigh although this is incompletely characterized on this exam.
Subcutaneous mass within the right thigh represents a resolving hematoma. Continued follow-up to resolution either clinically or via imaging is recommended.