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Clinical results of observation of the upper gastrointestinal tract by transgastrostomic endoscopy using an ultrathin endoscope

Background and Aim:  Esophagogastroduodenoscopy through the oral cavity of patients who have undergone percutaneous endoscopic gastrostomy (PEG) causes some distress and puts these patients at risk of aspiration pneumonia. The aim of this study was to evaluate results for the upper gastrointestinal tract by transgastrostomic endoscopy using an ultrathin endoscope.