Which of the following investigations are done in a case of duodenal ulcer? 1. Hypotonic duodenography 2. Barium meal 3. Barium swallow 4. Upper GI endoscopy 5. Abdominal X ray erect

Duodenal ulcers are best diagnosed by upper GI endoscopy but double contrast barium studies are also yield good results. Barium studies done for duodenal ulcers are Double contrast barium meal Double contrast hypotonic duodenography Barium swallow is useful to detect pathology in esophagus while Abdominal X ray will be useful in cases of perforated duodenal ulcers. Ref: Grainger Diagnostic radiology 4/e, Page 1064; Whitehouse's Procedures 3/e, Page 23, 30.