title: An upside-down view of an upside-down organ: endoscopic appearance in paraesophageal hiatus hernia.
mesh_terms: D000368:Aged; D004724:Endoscopy; D006548:Hernia, Diaphragmatic / Q000175:diagnosis*; D006551:Hernia, Hiatal / Q000175:diagnosis*; D006801:Humans; D008297:Male