 The margin for the resection of the lymph node bilaterally were the Cooper's ligament, the medial edge of the external iliac artery, the bifurcation of the common iliac vein, the obturator nerve, and the bladder. 
The margin for the resection of the lymph node bilaterally were the Cooper 's ligament , the medial edge of the external iliac artery , the bifurcation of the common iliac vein , the obturator nerve , and the bladder .