Abstract
Esophageal capsule endoscopy (ECE) is a new technology that allows noninvasive investigation of the esophagus. Our aim was to evaluate prospectively the diagnostic yield of ECE in patients with chronic reflux symptoms. Eighty-nine patients (40 men, mean age 54 yr) referred to five endoscopic centers for esophagogastroduodenoscopy (EGD) were enrolled. Patients first underwent ECE, then EGD; endoscopists who performed the EGD were blind to the ECE data that were interpreted separately by two independent readers. The Los Angeles, Prague, and Montreal classification systems were used to describe endoscopic findings. Seventy-seven patients completed the study. Esophagitis and endoscopically suspected esophageal metaplasia (ESEM) were present in 24 and 10 patients, respectively. Columnar lining was histologically confirmed in seven patients (3 with specialized intestinal metaplasia and 4 with gastric metaplasia). The kappa values for interobserver agreement regarding the diagnosis of esophagitis and ESEM were 0.67 (0.49-0.85) and 0.49 (0.17-0.81), respectively. The diagnostic yields of ECE to detect esophagitis and ESEM were as follows: sensitivity 79% and 60%, specificity 94% and 100%, positive predictive value (PPV) 83% and 100%, n...Continue Reading
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