Reason: evaluation of right leg soft tissue mass History: right leg soft tissue mass Skin markers were placed along the lateral aspect of the lower leg presumably corresponding to the patient's palpable area of concern. There is a mass within the peroneal musculature adjacent to the tendons, measuring 2.6 x 1.6 cm in the transverse dimension and 3.3 cm in the craniocaudal dimension. It is iso- to hypo-intense to skeletal muscle on T1-weighted images, hyperintense on fluid sensitive sequences and demonstrates thick irregular peripheral enhancement on postcontrast sequences with no enhancement identified centrally. Fat is noted along the superior and inferior margins, but not within the mass. The mass does not abut the underlying fibula. The remaining visualized soft tissues and bone marrow signal intensity are normal.
Mass within the peroneal musculature as described above. Its signal characteristics are nonspecific and referral to orthopedic oncology is recommended.