Fig. 2From: Clinical experience with the treatment of retroperitoneal vascular leiomyosarcoma originating from large veinsThe Trocars placement. Four Trocars were placed at the intersection of the twelfth rib and the edge of the psoas major (a), the costal margin along the anterior axillary line (b), the iliac crest along the midaxillary line (c), 5Â cm superior medial to iliac crest (d), respectively. A posterior view; B lateral viewBack to article page