Choices include push enteroscopy, sonde enteroscopy, capsule endoscopy and intraoperative enteroscopy.
Push enteroscopy is performed through the mouth and/or rectum, and allows for therapeutic measures through the endoscope.
Intraoperative enteroscopy involves placing an enteroscope or colonoscope into the small bowel by mouth or via an enterotomy with assistance from the surgeon to pass the scope through the jejunal and ileal lumen.
Sonde enteroscopy utilizes a thin, flexible tube passed through the small intestine by peristalsis but does not allow therapeutic measures.
Push or sonde enteroscopy detect small bowel lesions in only 6-48% of cases.