However, severe stomach pain can also be due to conditions such as colon cancer, appendicitis, diverticulitis, gall bladder disease, or an aortic aneurysm. Additionally, sometimes an upset stomach can ...
Acute abdominal ... the left retroperitoneal space. Atypical presentations are common, and the misdiagnosis rate is as high as 30-50%. Individuals who have a ruptured AAA often have back pain ...