Long-term outcome of infliximab combined with surgery for perianal fistulizing Crohn's disease

Figure 3 A 26-year-old female Crohn's disease patient. A: Preoperative magnetic resonance imaging (MRI) suggested a transsphincteric anal fistula in the deep posterior space of the anal canal; B: Postoperative MRI showed that there was still a cavity within the posterior space of the anal canal (30 wk after surgery). No obvious clinical symptoms were found when the patient was followed for 34 mo (the rectum was extended by the intracavitary water cyst).