Abstract
Subsquamous intestinal metaplasia (SSIM) is defined as metaplastic columnar tissue found beneath an overlying layer of intact squamous epithelium. SSIM occurs in >25% of those with dysplastic Barrett's esophagus (BE), and in 5% or more of patients following radiofrequency ablation (RFA) for BE. We assessed the predictors of SSIM in a nationwide RFA registry.
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