Additional file 1: Figure S1. of Intra-articular osteoid osteoma as a differential diagnosis of diffuse mono-articular joint pain

The osteoid osteoma in Case 3 had a hypointense signal in T1-weighted sequences (left panel), while it showed strong contrast enhancement in T1-weighted gadolinium-enhanced (GE) images (middle panel). In T2-weighted images, the signal was equally hyperintense (right panel). (PDF 3517 kb)