Recurrent Suprapatellar Fullness and Synovial Frond-like Masses on Knee MRI.

A 50-year-old male presented with recurrent effusion around the left knee joint. There was no history of trauma to the knee or recent episode of fever. On clinical examination, suprapatellar fullness with decreased range of movement was noted. However, there was no tenderness or redness of the overlying skin. There were no complaints in other joints of the body or a similar family history. He was advised X-ray of the knee joint (anteroposterior and lateral view) which showed advanced degenerative changes in the form of reduced tibiofemoral joint space, osteophyte formation with subchondral sclerosis, and cystic changes. A large suprapatellar fullness was also seen (Fig. 1). He was advised magnetic resonance imaging (MRI) to look for any synovial or intraarticular pathology (Figs. 2, 3 and 4). Recurrent Suprapatellar Fullness and Synovial Frond-like Masses on Knee MRI