<prompt> Answer this question truthfullyWhat is the connection between hiatus, hernia, and a chest x-ray?  <response>: <reason> An x-ray may be helpful in the diagnosis of a hiatus hernia. Findings on an x-ray suggestive hiatus hernia include: An upright radiograph of chest in patients with paraesophageal hernias reveals retro-cardiac air-fluid levelChes X-ray: A Hiatal hernia- Frontal view Air-fluid level behind the heart on the lateral radiograph. Source:Case courtesy of Dr Andrew Lawson, Radiopaedia.org, rID: 25499 