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Uptodate Reference Title
Magnetic resonance imaging of lipoma arborescens explaining dry tap
Magnetic resonance imaging of lipoma arborescens explaining dry tap
Failed arthrocentesis due to chronic synovitis with lipoma arborescens in a patient with psoriatic arthritis. T1 weighted (left) and T2 weighted (right) axial images through the mid-pole of the patella show massive frond-like, fatty proliferation of the synovium both on the medial and lateral sides of the joint (short arrows). Although a large joint effusion is present (E), placement of a needle, particularly from the medial side (long arrow), would probably enter the hypertrophied synovium and would fail to yield fluid. Aspiration of 10 mL of low-viscosity, inflammatory fluid was achieved by the lateral approach.
M: medial; L: lateral.
Reproduced with permission from: Roberts WN, Hayes CW, Breitbach SA, et al. Am J Med 1996; 100:461.