Details

Autor(en) / Beteiligte

• Savoye-Collet, C.
• Roset, J. B.
• Koning, E.
• Charpentier, C.
• Hommel, S.
• Lerebours, E.
• Dacher, J. N.
• Savoye, G.

Titel

Magnetic resonance colonography in severe attacks of ulcerative colitis

Ist Teil von

• European radiology, 2012-09, Vol.22 (9), p.1963-1971

Ort / Verlag

Berlin/Heidelberg: Springer-Verlag

Erscheinungsjahr

2012

Quelle

MEDLINE

Beschreibungen/Notizen

• Objectives To evaluate the ability of MR colonography (MRC) to detect lesions in severe attacks of ulcerative colitis (UC) and to assess its concordance with rectosigmoidoscopy. Methods Eighteen patients underwent MRC and rectosigmoidoscopy. MRC consisted of a water-filled colonic procedure followed by T1/T2w images. Image quality was recorded. Inflammatory lesions and the existence of signs of severity were analysed. We calculated MR accuracy in the diagnosis of inflammatory lesions, as well as per segment and per patient concordance depending on the presence or absence of severe lesions. Results The MR image quality of the 108 segments was satisfactory. Endoscopy was used to study 36 segments (rectum and sigmoid). MRC had a positive predictive value of 100% and a sensitivity of 64% in the diagnosis of inflammatory lesions. Concordance for the diagnosis of severe lesions was excellent for the rectum (k = 0.85) and good for the sigmoid (k = 0.64). MRC diagnosed signs of severity in all patients affected at endoscopy. MRC also disclosed signs of severity located higher in the colon in four patients with nonsevere lesions at rectosigmoidoscopy. Conclusions MRC can accurately diagnose inflammatory lesions in severe attacks of UC and significantly correlates with rectosigmoidoscopy in the diagnosis of severe lesions. Key Points • Magnetic Resonance Colonography (MRC) is increasingly used to investigate the large bowel. • MRC seems accurate in diagnosing inflammatory lesions in severe attacks of UC. • MRC findings significantly correlate with rectosigmoidoscopy findings for severe lesions. • Unlike rectosigmoidoscopy, MRC can identify severe lesions throughout the colon.