Table 3.

Defining Remission and Response in Patients With Perianal, Fistulizing CD

Complete remission	Symptomatic and radiographic remission (defined below)
Symptomatic remission	Absence of both pain and drainage* from the fistula tract
Symptomatic response	Meaningful improvement in symptoms of pain and drainage as judged by both the patient and physician in the absence of remission. Response should not be considered a desirable final outcome, but is useful to assess early response to treatments
Radiographic remission	Absence of inflammation in any fistula tract and the absence of any abscess

*Absence of drainage is considered to be no drainage from the fistula tract with the application of gentle pressure