Dr. Shen is the head and medical director of the IBD Center at Columbia. He is also the Vice Chair for Innovation in Medicine and Surgery and a Professor of Medicine (in Surgery). He is one of the world's pre-eminent leaders in interventional inflammatory bowel disease (IBD) due to his specialized expertise in treating a wide range of pouch-related disorders. In addition to pouchitis and pouch diseases, Dr. Shen specializes in IBD, GI endoscopy (including endoscopic pouch procedures), and imaging technology. Dr. Shen is known as a pioneer in interventional treatment for IBD - this includes postponing or eliminating the need for surgery in some cases.

• 1. Overview of Common Benign and Malignant Colorectal Diseases2. Overview of Common Endoscopic and Surgical Procedures for the Management of Colorectal Diseases3. Risk Factors for Endoscopy- or Surgery-Associated Complications in Inflammatory Bowel and Colorectal Diseases4. Anastomoses and Complications in Inflammatory Bowel and Colorectal Diseases5. Principles, Techniques, and Precautions of Endoscopic and Surgical Management of Complications in Inflammatory Bowel and Colorectal Disorders6. Endoscopy-Associated Complications in Colorectal Diseases: Clinical Presentation and Diagnostic Evaluation7. Classification of Postendoscopy and Postoperative Complications8. Porcine Model of Anastomotic Stricture in Crohn’s Disease9. Radiographic Evaluation and Management of Endoscopy- or Surgery-Associated Complications in Colorectal Diseases10. Histopathological Features of Perforation, Anastomotic Leaks, Abscesses, and Strictures11. Salvage Endoscopy in the Management of Acute Lower Gastrointestinal Endoscopy-Associated Complications12. Closure of Endoscopy- and Surgery-Associated Colonic Defects: From Animal Lab to Endoscopy Suite13. Endoscopic Management of Anastomotic Strictures in Colorectal Diseases14. Endoscopic Management of Ileal Pouch Strictures15. Endoscopic Management of Postoperative Floppy Bowel16. Endoscopic Therapy of Acute Anastomotic Leaks in Colorectal Surgery17. Endoscopic Therapy of Fistulas From Chronic Anastomotic Leaks18. Endoscopic Therapy of Presacral Sinus19. Stoma Complications: Conservative Management20. Stomal Complications: Endoscopic Therapy21. Stoma Complications: Surgical Management22. Endoscopic Therapy of Crohn’s Disease- and Anastomotic Leak-Associated Pararectal, Parapouch, and Perianal Fistulas and Abscesses23. Endoscopic Management of Diverted or Bypassed Bowel Complications24. Endoscopic Management of Colorectal Cancer Surgery-Associated Complications25. Endoscopic Management of Valvulus, Rectal Prolapse, Rectocele, and Intussusception26. Salvage Interventional Radiology and Surgery in Acute Anastomotic Leak and Abscess27. Conservative Approaches to Salvaging Patients With Chronic Anastomotic Leaks28. Salvage Surgery for Latrogenic Endoscopy-Associated Perforation29. J-Pouch and Redo J-Pouch30. Corrective Surgery for Surgery-Associated Vaginal Fistula31. Diverting Stoma in the Management of Endoscopy or Surgery and Its Complications (Jejunostomy, Ileostomy, and Colostomy)32. Conversion of J-Pouch to Kock Pouch33. Diagnosis and Management of Postoperative Functional Pelvic Floor Disorders34. Clinical Nutrition in the Prevention and Management of Postoperative Complications in Colorectal Diseases35. Multidisciplinary Approach for Endoscopy- and Surgery-Associated Complications36. Endoscopic Evaluation of Healthy and Diseased Ileal Pouch-Anal Anastomosis37. Common Kock Pouch and BCIR-Related Complications: Clinical Endoscopic, Histologic, and Radiographic Characterization38. Endoscopic Corrective Procedures for Kock Pouch- and Barnett Pouch-Related Problems and Complications39. Surgical Corrective Procedures for K-Pouch-Related Problems and Complications40. Pouchitis Due to Mechanical or Functional Issues: Endoscopic Management41. Management of Endoscopic and Surgical Complications in IBD and Colorectal Disease in Pediatric Patients42. Impact on Quality of Life and Mental Health of Postendoscopy and Postoperative Complications

Dr. Shen is the head and medical director of the IBD Center at Columbia. He is also the Vice Chair for Innovation in Medicine and Surgery and a Professor of Medicine (in Surgery). He is one of the world's pre-eminent leaders in interventional inflammatory bowel disease (IBD) due to his specialized expertise in treating a wide range of pouch-related disorders. In addition to pouchitis and pouch diseases, Dr. Shen specializes in IBD, GI endoscopy (including endoscopic pouch procedures), and imaging technology. Dr. Shen is known as a pioneer in interventional treatment for IBD - this includes postponing or eliminating the need for surgery in some cases.

• 1. Overview of Common Benign and Malignant Colorectal Diseases2. Overview of Common Endoscopic and Surgical Procedures for the Management of Colorectal Diseases3. Risk Factors for Endoscopy- or Surgery-Associated Complications in Inflammatory Bowel and Colorectal Diseases4. Anastomoses and Complications in Inflammatory Bowel and Colorectal Diseases5. Principles, Techniques, and Precautions of Endoscopic and Surgical Management of Complications in Inflammatory Bowel and Colorectal Disorders6. Endoscopy-Associated Complications in Colorectal Diseases: Clinical Presentation and Diagnostic Evaluation7. Classification of Postendoscopy and Postoperative Complications8. Porcine Model of Anastomotic Stricture in Crohn’s Disease9. Radiographic Evaluation and Management of Endoscopy- or Surgery-Associated Complications in Colorectal Diseases10. Histopathological Features of Perforation, Anastomotic Leaks, Abscesses, and Strictures11. Salvage Endoscopy in the Management of Acute Lower Gastrointestinal Endoscopy-Associated Complications12. Closure of Endoscopy- and Surgery-Associated Colonic Defects: From Animal Lab to Endoscopy Suite13. Endoscopic Management of Anastomotic Strictures in Colorectal Diseases14. Endoscopic Management of Ileal Pouch Strictures15. Endoscopic Management of Postoperative Floppy Bowel16. Endoscopic Therapy of Acute Anastomotic Leaks in Colorectal Surgery17. Endoscopic Therapy of Fistulas From Chronic Anastomotic Leaks18. Endoscopic Therapy of Presacral Sinus19. Stoma Complications: Conservative Management20. Stomal Complications: Endoscopic Therapy21. Stoma Complications: Surgical Management22. Endoscopic Therapy of Crohn’s Disease- and Anastomotic Leak-Associated Pararectal, Parapouch, and Perianal Fistulas and Abscesses23. Endoscopic Management of Diverted or Bypassed Bowel Complications24. Endoscopic Management of Colorectal Cancer Surgery-Associated Complications25. Endoscopic Management of Valvulus, Rectal Prolapse, Rectocele, and Intussusception26. Salvage Interventional Radiology and Surgery in Acute Anastomotic Leak and Abscess27. Conservative Approaches to Salvaging Patients With Chronic Anastomotic Leaks28. Salvage Surgery for Latrogenic Endoscopy-Associated Perforation29. J-Pouch and Redo J-Pouch30. Corrective Surgery for Surgery-Associated Vaginal Fistula31. Diverting Stoma in the Management of Endoscopy or Surgery and Its Complications (Jejunostomy, Ileostomy, and Colostomy)32. Conversion of J-Pouch to Kock Pouch33. Diagnosis and Management of Postoperative Functional Pelvic Floor Disorders34. Clinical Nutrition in the Prevention and Management of Postoperative Complications in Colorectal Diseases35. Multidisciplinary Approach for Endoscopy- and Surgery-Associated Complications36. Endoscopic Evaluation of Healthy and Diseased Ileal Pouch-Anal Anastomosis37. Common Kock Pouch and BCIR-Related Complications: Clinical Endoscopic, Histologic, and Radiographic Characterization38. Endoscopic Corrective Procedures for Kock Pouch- and Barnett Pouch-Related Problems and Complications39. Surgical Corrective Procedures for K-Pouch-Related Problems and Complications40. Pouchitis Due to Mechanical or Functional Issues: Endoscopic Management41. Management of Endoscopic and Surgical Complications in IBD and Colorectal Disease in Pediatric Patients42. Impact on Quality of Life and Mental Health of Postendoscopy and Postoperative Complications