W1150 Endorectal Ultrasound and Magnetic Resonance Imaging in Staging of Rectal Cancer in Routine Daily Practice

Abstract

G A A b st ra ct s in 10,9% (7/64) and mild activity in 11,9% (8/64). From a total amount of 64 non-explored segments by endoscopy in 36 patients (39,1%), MRI showed 1 affected segment in 18/36 (50%), 2 affected segments in 8/36 (22,2%) and 3 affected segments in 2/36 (5,6%). MRI detected extraintestinal complications in 28,3% (26/92) such as fistulae in 18,5% (17/92), fibrotic stenosis in 9,8% (9/92), abscess in 8,7% (8/92) and inflammatory mass in 5,4% (5/ 92). Therefore MRI was the only exploration which showed the presence of inflammatory activity and/or severe lesions in 6,5% (6/92) and/or extraintestinal complications in 28,3% (26/92) and therefore globally MRI could change the management of these patients in 30,4% (28/92). CONCLUSIONS: this study confirms the high diagnostic accuracy of MRI for evaluation of disease activity in CD and demonstrates for the first time its impact on management, suggesting a key role of this technique in clinical practice.