title: Perforated peptic ulcer.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010439:Peptic Ulcer Perforation / Q000453:epidemiology / Q000401:mortality / Q000601:surgery; D011708:Pylorus / Q000601:surgery; D014628:Vagotomy