29 June 2021
: Case report 
Post-Traumatic Hemosiderotic Synovitis of the Knee Mimicking Pigmented Villonodular Synovitis on Magnetic Resonance Imaging (MRI) in a Child: A Case Report
Mistake in diagnosis, Diagnostic / therapeutic accidents, Rare disease
Ruba A. Khasawneh1ABCDEF*, Ziyad M. Mohaidat2ABCDEF, Maha M. Gharaibeh1ABCDEF, Ahmad Hdeeb1ABCDEFDOI: 10.12659/AJCR.931992
Am J Case Rep 2021; 22:e931992
Figure 2. Sagittal proton density MRI of the knee after 2 months. (A) Notice the interval increase in the knee effusion compared with Figure 1. The frond-like low signal intensity projections and popliteal mass looked the same (white arrows). (B) There has been interval development of a large lobulated low signal intensity mass in the suprapatellar recess (arrow head).