Could reflux esophagitis show on chest x-ray?

No: Esophagitis is inflammation of the lining of the esophagus. It is not evident on a chest x-ray but may be seen on a barium swallow of the esophagus or, with greater sensitivity, endoscopy of the esophagus by a gastroenterologist.

Not usually: Sometimes air can be seen in esophagus on multiple chest exams and suggest possible gastroesophageal reflux but symptoms of esophagitis is usually diagnosed and confirmed by endoscopy. Sometimes esophagitis is suggested on CT exam of chest by thickened walls of esophagus seen in lower chest