abstract
- In the belief that "pattern recognition" is an important first step of the diagnostic process, we report our observation of an uncommon and heretofore poorly documented symptom-complex in 10 patients, and suggest that the constellation of abdominal pain and urgency to defecate in the acutely ill surgical patient should raise the diagnostic possibility of intra-abdominal bleeding. In our experience, this is statistically likely to be associated with a ruptured abdominal aortic aneurysm in the old and a ruptured ectopic pregnancy in the young.