Figure 3.

TNF blocker effect on sacrolliitis. Short Tau (t) (inversion time) Inversion Recovery (STIR) magnetic resonance (MR) imaging of the sacroiliac joints of a 16-year-old boy a 3-month history of gluteal pain and a 3-year history of peripheral arthritis and enthesitis before (A) and 14 weeks after 5 mg/kg infliximab treatment at baseline and weeks 2 and 6. In (A), there is ample edema of the iliac bone and sacrum (line) and part of the sacrum inferior quadrant on the opposite side (arrow) that cleared-up after treatment (B).