A 31-Year-Old Patient With Colitis and Perianal Disease Michael J. Rosen, David A. Schwartz  Clinical Gastroenterology and Hepatology  Volume 8, Issue 1, Pages 10-14 (January 2010) DOI: 10.1016/j.cgh.2009.07.009 Copyright © 2010 AGA Institute Terms and Conditions

Figure 1 Goal of seton placement in conjunction with anti-TNF therapy in the management of Crohn's perianal fistulas. Anti-TNF treatment of a complex fistula without seton drainage leaves the potential for premature closing of the internal and external fistula openings, creating an abscess cavity. Seton placement before anti-TNF treatment controls fistula healing, allowing the inflammation to be treated completely and the exudate drained before track closure. Clinical Gastroenterology and Hepatology 2010 8, 10-14DOI: (10.1016/j.cgh.2009.07.009) Copyright © 2010 AGA Institute Terms and Conditions

Figure 2 Algorithm for the medical and surgical management of Crohn's perianal fistulas. Clinical Gastroenterology and Hepatology 2010 8, 10-14DOI: (10.1016/j.cgh.2009.07.009) Copyright © 2010 AGA Institute Terms and Conditions