Fig. 4From: Laparoscopic D3 lymph node dissection with left colic artery and first sigmoid artery preservation in rectal cancerLaparoscopic views of four common types of IMA (type I: LCA and SA emanate from IMA independently; type II: LCA and SA co-trunk; type III: LCA, SA, and SRA emanate from the same point; type IV: LCA is absent)Back to article page