Diagnosis and Classification of Inflammatory Bowel Disease Strictures

Risk and incidence of colorectal stricture progressing to colorectal neoplasia in patients with inflammatory bowel disease: a systematic review and meta-analysis

“…We also studied and analyzed the incidence of colorectal stricture in patients with IBD and found that the incidence of colorectal strictures was 7.0% in patients with IBD and significantly higher in patients with CD than in patients with UC (15.4% vs. 4.5%). Some studies have suggested that intestinal strictures are less common in patients with UC [4,35] but more common in patients with CD, and a study by Sonnenberg and Genta [8] showed that colorectal strictures were approximately 11 times more common in patients with CD than in patients with UC (OR = 11.09; 95% CI 9.72-12.70). Approximately 10% of CD patients will present with fibrous strictures at initial diagnosis [36], and approximately 50 and 70% of patients eventually develop colorectal strictures at 5 and 10 years of diagnosis [37].…”

“…Colorectal stricture is usually defined as a fixed, localized narrowing of the intestinal lumen that endoscopy cannot pass by [2], and the formation of colorectal stricture is associated with congenital malformations, inflammation, trauma, tumors, and surgery [3]. Colorectal stricture is a common complication of IBD [4]. In the Montreal classification system, colorectal stricture is classified as non-stenotic and non-penetrating stenosis (B1), stenosis (B2) and penetrating stenosis (B3) according to the clinical behavior of CD [5].…”