Fig. 20From: Hoffa’s fat pad abnormalities, knee pain and magnetic resonance imaging in daily practiceExtraskeletal chondroma, Sagittal proton density with fat saturation image shows a heterogeneous mass within the fat pad, with high signal of chondroid matrix and oedema and low signal of calcification or ossification (courtesy of Dr. L. Pietrobono, IRCCS Policlinico San Matteo, Pavia)Back to article page