Ileo-ileal invagination--a cause of recurrent mid-gastrointestinal bleeding: diagnostic and endoscopic therapy by means of push-and-pull enteroscopy.

The types of lesions that cause bleeding in the small bowel are similar to those found in other areas in the gastrointestinal tract, such as vascular malformations, ulcers and inflammatory lesions, neoplasms and other less common lesions like Meckel's diverticulum. This report describes three patients with suspected mid-gastrointestinal bleeding with no significant past medical history. Before presenting to our unit the diagnostic work-up such as oesophagogastroduodenoscopy, colonoscopy and radiological small bowel imaging such as conventional enteroclysis or magnet resonance imaging enteroclysis had been performed without detecting any bleeding source. Capsule endoscopy suspected an angiod…