Background: Mural thickening (MT) on computed tomography (CT) poses a diagnostic dilemma in the absence of clear reporting guidelines. The aim of this study was to analyse CT reports, identifying patients in whom gastrointestinal wall MT was observed, and to correlate these reports with subsequent endoscopic evaluation.
Methods: Patients with MT who had follow-up endoscopy were included in the study (n = 308). The cohort was subdivided into upper gastrointestinal mural thickening (UGIMT) & lower gastrointestinal mural thickening (LGIMT).
Results: In total, 55.71% (n = 122) of colonoscopies and 61.8% (n = 55) of gastroscopies were found to be normal. Haemoglobin (HB) level in combination with MT was a predictor of neoplasia in both arms (p = 0.04 UGIMT cohort, p < 0.001 LGIMT cohort). In addition to this, age was a significant correlative parameter in both UGIMT and LGIMT cohorts (p = 0.003, p < 0.001 respectively). Dysphagia and weight loss were associated with UGI malignancies (38 and 63% respectively) and rectal bleeding was correlative in 20% of patients with LGI malignancies.
Conclusion: HB, advancing age, and red flag symptoms are potentially useful adjuncts to MT in predicting upper and lower gastrointestinal malignancies. We propose the adoption of a streamlined pathway to delineate patients who should undergo endoscopic investigation following CT identification of MT.
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