Lipoma arborescens synovitis

Case contributed by Joe Cyriac


Left knee pain

Patient Data

Age: 45 years
Gender: Male

There is a large suprapatellar joint effusion with frond-like deposits of fat tissue in the synovium that demonstrate T1 prolongation and fat saturation. The findings are consistent with synovitis due to lipoma arborescens. There is also mild osteoarthritis and a large complex Baker's cyst with multiple septations which measures approximately 6.8 x 3.9 x 3.2 cm.

Case Discussion

This case demonstrates a lipoma arborescens of the left knee. MRI remains the gold standard modality in imaging when compared to non-contrast CT.

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