There are a number of cases on pub med of misdiagnosis of crohns due to ileal endometriosis. It says at the conclusion of several of the articles endometriosis of the small bowel should be considered carefully in a differential diagnosis of crohns in female patients.
I wish it wouldn't be so hard to diagnose. It would be nice to rule this out but going in with lapraoscopy is pretty invasive isn't it.