American gastroenterological association medical position statement: perianal Crohn’s disease1 1Address requests for reprints to: Chair, Clinical Practice Committee, AGA National Office, c/o Membership Department, 4930 Del Ray Avenue, Bethesda, Maryland 20814. Fax: (301) 654-5920.This Medical Position Statement has been developed under the aegis of the c (AGA). It provides preferred approaches to specific medical problems or issues. The statements herein are derived from the data available at the time of their creation and may need to be modified as new information is generated. Unless otherwise stated, these statements are intended for adult patients. The strength of the evidence upon which the statements are based is noted, with prospective, randomized, controlled trials being the strongest. When adequate data are absent, expert consensus may be used and will be identified as such. This document is not to be construed as a standard of care. All decisions regarding the care of a patient should be made by the physician in consideration of all aspects of the patient’s specific medical circumstances.