What is the most likely diagnosis? 
              
- 73 year-old male with heartburn

  
 
  Double Contrast Upper GI Examination of the Duodenum
            
              
              
                - Giant Duodenal Ulcer
- Crohn Disease
- Dudeoneal Diverticulum
- Paraduodenal Hernia
- Lymphoma
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                  Answer:
               
              
                3. Duodenal Diverticulum
                 
              
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              Duodenal Diverticulum
                
              
              General Considerations
              
                - Relatively common (up       to 6% of upper GI examinations) in adults
- Usually arise in 2nd portion of the duodenum (85%) within 1-2 cm of the ampulla of Vater
- Like almost all GI       diverticula, they are false diverticula with herniation of the mucosa and       submucosa through the muscular layer