QUality of Life in pAtients With Mild to modeRate Active procTitis Treated by mesalaZine (Pentasa®)

Inclusion Criteria: * Patient aged 18 years or older. * Patient suffering from mild to moderate active proctitis or distal proctosigmoiditis (MAYO score ≥ 3 and ≤ 10) at inclusion based on clinical and endoscopic findings within 6 months before study inclusion. * Patient with evidence of endoscopic active proctitis or distal proctosigmoiditis (Montreal classification E1 or E2 defined by an involvement not exceeding 25 cm from the anal margin) within 6 months before study inclusion. * Treatment of the current flare with Pentasa® to induce a remission initiated by the patient, the general practitioner or the gastroenterologist, during the inclusion visit or during the week before the inclusion visit. * Patient having received oral and written information on the study, without any objections for the use of his/her personal data, and having signed a written Informed Consent Form. Exclusion Criteria: * Patient included in an interventional study assessing treatment for active proctitis or distal proctosigmoiditis. * Patient with left sided, colitis or pancolitis. * Patient with severe proctitis (MAYO score ≥ 11 at inclusion). * Patient previously treated with biologics. * Patient treated with immunosuppressive within 1 month before study inclusion. * Patient treated with corticosteroids within 2 weeks before study inclusion.