Autoimmune enteropathy and primary biliary cholangitis after proctocolectomy for ulcerative colitis: A case report and review of the literature

Figure 1 Endoscopic images at the onset of postcolectomy enteritis in 2016. A: Gastroscopy showing a normal duodenal bulb; B: Gastroscopy showing a normal descending duodenum; C and D: Endoscopy with loop ileostomy showing a normal appearance of the neoileum.

Figure 2 Pathological findings at the onset of postcolectomy enteritis in 2016. A: The biopsy from the duodenum showed chronic inflammation, moderate villous atrophy, and decreased goblet cells (× 40); B: Active inflammation, cryptitis, and destroyed crypts were observed in some areas (× 100).

Figure 3 Endoscopic images at the onset of autoimmune enteropathy in 2019. A: Gastroscopy showing diffuse villous atrophy in the mucosa of the duodenal bulb; B and C: Gastroscopy showing diffuse villous atrophy in the mucosa of the descending duodenum; D and E: Enteroscopy showing diffuse villous atrophy in the mucosa of the ileum; F and G: Enteroscopy showing diffuse villous atrophy in the mucosa of the ileal pouch.

Figure 4 Pathological findings at the onset of autoimmune enteropathy in 2019. The biopsy showed prominent chronic inflammation, flat villi, and a lack of goblet and Paneth cells (A), and apoptosis bodies were found (arrow) (B).