Obturator fossa node dissection

The lymphatic tissue of the obturator fossa is freed from the lateral pelvic sidewall by bluntly dissecting lateral to the external iliac artery and vein. The obturator nerve is then identified coursing through the obturator fossa and freed of lymphatic tissue by running the Metzenbaum scissors parallel to the nerve. The lymphatic tissue can now be lifted out of the obturator fossa carefully to avoid damaging the internal iliac artery and vein.