Numerous well circumscribed intramedullary lesions of variable size are demonstrated throughout the imaged periarticular femur, tibia, fibula and patella, involving both the metadiaphyses and epiphyses.
The lesions are of low T1 signal. Most are of high signal on the PD fat sat (fluid sensitive) sequences, and low signal on the PD acquisition. There is minimal cortical scalloping, but no overt lytic process.
Additionally, there is more confluent fluid signal within the anterior tibial metaphysis, with suspected anteromedial microtrabecular fracture.
The cruciate and collateral ligaments, menisci and chondral surfaces are intact.