- Validation of the utility of "Patency Agile™" used before the capsule. All the patients included will have before their endoscopic capsule an examination by patency. After validation, the patients will have an exploration by the video capsule. The readers will fill a grid with standardized lesions. The films will be read by two other independent readers. The patients treated by infliximab or prednisone will have one second capsule afterwards 10 weeks.