Female, 56 years old. Left leg sarcoma. Evaluate for response/progression. A lobulated, heterogeneous solid mass lesion within the anterior subcutaneous soft tissues of the thigh measures 4.5 x 2.6 x 4.7 cm (series 7, image 20; series 12, image 23), with increased signal on T2 images, diffuse enhancement, and mild surrounding soft tissue edema. The mass appears entirely located within the subcutaneous fat and does not appear to extend into the deep fascial spaces. The underlying muscles and tendons are unremarkable.The visualized osseous structures are unremarkable, with normal cortical thickness and marrow signal.
A 4 to 5 cm mass within the anterior subcutaneous soft tissues of the thigh is compatible with a known history of sarcoma.