The hypothesis of this study is that IC-CO2 will provide useful information which does affect surgical decision making at the time of operation, and that it is safe and does not result in any significant bowel distention during or immediately after the procedure. We additionally hypothesize that certain localized lesions of the intestines may be treated using a combined laparoscopic-IC-CO2 approach to effectively treat the underlying disease, minimize risks to the patient, and avoid a major bowel resection.