This video fully demonstrates all the technical aspects of performing sentinel node biopsy in the sigmoid mesocolon by NOTES. A transgastric access to the peritoneum allows a flexible gastroscope observe the lymphatic mapping in real-time and then to perform excisional nodal biopsy while magnetic retraction provides full exposure of the sigmoid mesentery. Such a totally NOTES procedure could be used to supplement colonoscopic intraluminal dissection (e.g. ESD) or prompt transmural localized resection (perhaps also by NOTES).

This video is reproduced here by kind permission of the Annals of Surgical Oncology and Springer Verlag.
Publication citation: Lymphatic mapping and sentinel node biopsy in the colonic mesentery by NOTES. RA Cahill, S Perretta, J Leroy, B Dallemagne, J Marescaux. Annals of Surgical Oncology 2008 Oct;15(10):2677-2683. Epub 2008 May 20.
Note: This work is also the subject of an invited editorial in the same issue: i.e. Takeuchi H, Kitagawa Y. Sentinel Node Biopsy Without Scars: Does Natural Orifice Transluminal Endoscopic Surgery Herald a New Era for Early GI Cancer? Ann Surg Oncol 2008 Oct;15(10):2639-40.

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