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Assessment of Inflammatory and Fibrotic Stenoses in Patients with Crohn's Disease Using Contrast-Enhanced Ultrasound and Computerized Algorithm: A Pilot Study.

Summary of "Assessment of Inflammatory and Fibrotic Stenoses in Patients with Crohn's Disease Using Contrast-Enhanced Ultrasound and Computerized Algorithm: A Pilot Study."

Purpose: The development of stenosis is a typical complication of Crohn's disease and represents a serious diagnostic and therapeutic challenge. The aim of the present study was to define objective quantitative measures of stricture characteristics (fibrostenotic/cicartricial vs. inflammatory) using contrast-enhanced ultrasound (CEUS) in patients with stenotic Crohn's disease. Materials and Methods: During a period of 18 months, 18 consecutive patients with Crohn's disease and manifestation of a localized significant small bowel stenosis were prospectively recruited. Standardized ultrasound (US) examination, color-coded duplex sonography and CEUS using SonoVue® were performed. Quantitative measurements of bowel wall vascularity were determined using computerized algorithms (Bracco QONTRAST software). The quality of stenosis (fibrostenotic vs. inflammatory) was classified in a 4-point scale, and the diagnostic/prognostic power of the US and clinical tests upon initial presentation were compared. Results: We established a novel standardized CEUS procedure using computerized algorithms to quantitatively examine stenoses in Crohn's disease. An inflammatory origin of stenosis correlated significantly with a high Crohn's Disease Activity Index (CDAI) (p < 0.01), the length of stenosis (p < 0.01) as well as the Limberg score (p < 0.01). There was no correlation between the type of stenosis and quantitative results of CEUS. Conclusion: Although bowel wall vascularity can be quantitatively assessed in stenotic areas by CEUS, this analysis does not improve the diagnostic power for the objective determination of the quality of stenosis at a single measurement. Semiquantitative analysis of bowel wall vascularity, length of stenosis, and CDAI may help to discriminate the origin of small bowel stenosis in Crohn's disease.

Affiliation

Department of Medicine III, University Hospital Aachen, RWTH Aachen University, Aachen, Germany.

Journal Details

This article was published in the following journal.

Name: Digestion
ISSN: 1421-9867
Pages: 263-268

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Chronic, non-specific inflammation of the GASTROINTESTINAL TRACT. Etiology may be genetic or environmental. This term includes CROHN DISEASE and ULCERATIVE COLITIS.

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