The fat pad adjacent to the kneecap (Hoffa's fat pad, infrapatellar fat pad) can change in signal on MRI when the knee is inflamed. (A) Normal knee without signs of inflammation. (B) Arrow ...

MRI of the knee revealed a tumor arising from the Hoffa fat pad. The cause was a proliferative ... tumor resection (open or arthroscopic) is the treatment of choice. The risk of recurrence of ...