postbulbar duodenal ulcers

peptic ulcer disease
- only 5% of benign ulcers are postbulbar
Zollinger-Ellison syndrome (gastrinoma)
- 25% postbulbar
benign tumor (esp. leiomyoma)
malignant tumor
- 1' duodenal Ca
- invasion (nnodes, pancreas, colon, kidney, GB)
- malignant melanoma
Crohn's disease
TB
aorticoduodenal fistula
simulators:
- ectopic pancreas
- duodenal tics