Fig. 5From: Vedolizumab combined with surgical resection successfully treated perforating Crohn’s disease with peritoneal space to rectal and vaginal fistulas: a case reportPathological presentation of Crohn’s disease. A Dense fibrous fistula from the terminal ileum. B Arrow: lymphoid follicles, demonstrating transmural involvement. C Arrow: a fissure. The remaining mucosa on the left shows marked crypt distortion. D Blue arrow: crypt branching. Yellow arrow: pyloric metaplasia (both are features of chronicity)Back to article page