14-year-old male with soft tissue sarcoma of the left thigh status post resection. Evaluate At the medial aspect of the left vastus lateralis muscle below the greater trochanter (at the site of the skin marker), there is infiltrative/linear region of increased T2/STIR signal (series 8, images 45 through 51). This region demonstrates infiltrative/linear enhancement (series 10, images 43 through 50). Additionally, there is increased T2/STIR signal in the overlying subcutaneous tissues consistent with inflammatory changes. Areas of metallic susceptibility artifact correspond to the surgical clips present on the recent radiograph. No abnormality of the visualized left femur.
Infiltrative/linear T2 hyperintensity with enhancement involving the left vastus lateralis muscle. These findings are more likely secondary to postoperative changes and granulation tissue than residual tumor.