Evaluate for other causes of pain
CXR may show retrocardiac air-filled<unk>  shadow
Upright CXR and abdominal x-ray
Intrathoracic, upside-down stomach
Double air fluid level in stomach
Collapsed small bowel
CT abdomen most helpful<unk>  herniation around points of torsion
May show signs of<unk>  ischemia, seen a lack of contrast enhancement of<unk>  wall
Intrathoracic, upside-down stomach
Double air fluid level in stomach
Collapsed small bowel<unk>  herniation around points of torsion
May show signs of<unk>  ischemia, seen a lack of contrast enhancement of<unk>  wall
Gastric volvulus
Abdominal aortic aneurysm
Pyloric stenosis
Aortocaval fistula
Clogged G-tube
Acute gastroenteritis
Achalasia
Aortoenteric fisulta