Fig. 7From: Total laparoscopic resection by medial-retroperitoneal approach using virtual navigation: two case reports of primary retroperitoneal schwannomaa The medial-retroperitoneal approach begins with an incision of the peritoneum at the mesenteric root (dotted arrow), after which the dissection plane can be entered to the ventral side of the deep subperitoneal fascia. b This approach involves wide dissection of the ventral side of the deep subperitoneal fascia and provides a favorable surgical fieldBack to article page