Prepatellar bursal gout. Lateral knee radiograph (a) shows dense focal prepatellar soft tissue swelling with peripheral soft tissue calcifications. Axial T2 (b) and sagittal fat saturated proton density (c) MR images demonstrate intermediate soft tissue corresponding to the prepatellar bursa with internal septations. Incidental note is made of femoral bone infarcts (thin arrow). P: patella.
