Manual compression proximal and distal to a selected segment allow insufflation. The lesion is visualized both by the endoscopist and by transillumination. (Reprinted with permission from Scott Conner CEH, Dawson DL. Operative Anatomy. Philadelphia: Lipp
A. Transillumination and finger depression of the abdominal wall confirm juxtaposition of the inflated stomach and the anterior abdominal wall. B. The site selected will generally be approximately halfway between costal margin and umbilicus.