X-ray may be useful to diagnose gut<unk> . Findings of chest x-ray in esophageal<unk>  include Pneumomediastinum, ring-around-the-artery sign in cases of pneumomediastinum, and widening of the mediastinum. Findings of abdominal x-ray in esophageal<unk>  include free gas under the diaphragm is a classic sign of pneumoperitoneum on erect chest, cupola sign is an arcuate lucency over the lower thoracic spine, and rigler sign is seen as gas outlines the inner and outer surfaces of the intestine. Signs of<unk>  on plain neck imaging include subcutaneous emphysema tracking into the neck, anterior displacement of the trachea, and air in the prevertebral fascial planes on lateral view.
Gastrointestinal perforation x-ray
Ileus physical examination
Mesenteric ischemia physical examination
Bowel obstruction X-ray
Secondary peritonitis physical examination
Mesenteric ischemia electrocardiogram
Toxic megacolon physical examination
Acute cholecystitis physical examination