Clinical utility of endoscopy and barium swallow X-ray in the diagnosis of sliding hiatal hernia in morbidly obese patients: a study before and after gastric bypass.

Background: The main clinical consequence of sliding hiatal hernia (SHH) is gastroesophageal reflux disease (GERD). Endoscopy and barium swallow X-ray are commonly used to diagnose SHH. We aimed to assess the clinical utility of endoscopy and X-ray in the diagnosis of SHH in morbidly obese patients before and after gastric bypass (GBP).