Thigh mass. Sarcoma status post radiation. The lobulated predominantly T2 hyperintense cystic-solid irregularly-enhancing soft tissue mass centered at the anterior mid to distal right thigh measures 14.1 cm AP x 12.3 cm TV x 27.1 cm CC, previously 12.6 AP x 10.2 cm TV x 22.5 cm CC. The mass appears encapsulated and lies deep to the quadriceps tendon and muscles, which are atrophic, and drapes along the lateral aspect of the femur. There is edema in the adjacent subcutaneous fat and in the musculature of the posterior compartment. The mass is in close proximity to the vasculature of the thigh, though remains separate. The mass contacts the right femur with mild periosteal reaction at the distal medial aspect without areas of osseous destruction. No inguinal lymphadenopathy is evident. The mass terminates approximately 2 cm cranial to the superior pole of the patella. There is no evidence of invasion into the knee joint. No knee joint effusion is seen.
Enlarged right thigh mass compatible with malignancy, as described above.