Female 60 years old Reason: left hip mass History: pain There is flattening of the left femoral head with low T1, serpiginous signal and corresponding T2 hyperintense subchondral cysts and edema. Osteophyte formation and near-complete degeneration of articular cartilage indicating severe osteoarthritis. No appreciable joint effusion. There is diffuse fatty atrophy of the musculature about the left hip. There is a 5 x 3 cm mass in the subcutaneous fat overlying the gluteus maximus corresponding to calcified lesion seen on prior radiograph, which demonstrates homogeneous low signal on all sequences with no enhancement on postcontrast images.
Severe left hip osteoarthritis with avascular necrosis. Benign-appearing subcutaneous mass corresponding to calcified lesion on radiograph.