Lipoma Arborescens: Review of an Uncommon Cause for Swelling of the Knee

Figure 2

Sagittal proton-density weighted fast spin echo image through the medial femorotibial compartment showing not only a villous fatty proliferation of the synovial membrane in the suprapatellar recess (asterisk) but also a fatty mass posterior to the femoral condyle (arrow) and villous proliferations around the insertion of the semimembranosus tendon (arrowhead).