Principles, Preparation, Indications, Precaution, and Damage Control of Endoscopic Therapy in Inflammatory Bowel Disease Diagnosis and Classification of Inflammatory Bowel Disease Strictures Diagnosis and Classification of Fistula from Inflammatory Bowel Disease and Inflammatory Bowel Disease-Related Surgery Imaging Evaluation of Inflammatory Bowel Disease Complications Endoscopic Balloon Dilation of Strictures: Techniques, Short- and Long-Term Outcomes, and Complications Endoscopic Stricturotomy and Strictureplasty Endoscopic Stenting for Inflammatory Bowel Disease Strictures Porcine Model of Anastomotic Stricture in Crohn's Disease Endoscopic Therapy for Fistulas and Abscesses in Crohn's Disease Endoscopic Evaluation and Management of Perianal Disease Overview of Common Complications in Inflammatory Bowel Disease Surgery Endoscopy in the Surgically Altered Bowel Endoscopic Treatment of Acute and Chronic Anastomotic Leaks from Inflammatory Bowel Disease Surgery Intraoperative Endoscopic Interventions of Inflammatory Bowel Disease Endoscopic Treatment of Postoperative Bleeding, Bezoars, and Foreign Bodies Image-Enhanced Endoscopy in the Surveillance of Colitis-Associated Neoplasia Endoscopic Management of Colitis-Associated Neoplasia