Multiple lobulated synovial effusion and hypertrophy seen involving the left knee joint. There are foci of intermediate to low signal intensity on both T1 and T2 weighted images within the collections -- hemosiderin deposition. Peripheral enhancement of the collections.
Large Baker's cyst in the posterior compartment of the knee joint.
Patchy areas of T2 and STIR hyperintensities in the involved tibia, fibula and femur.