Efficacy of laparoscopic low anterior resection for colorectal cancer patients with 3D-vascular reconstruction for left coronary artery preservation

Figure 1 The left colic artery was preserved. A: Isolation of the main naked inferior mesenteric artery; B: Isolatedisolation of the naked left colic artery; C: Clearance of the lymph nodes in group 253; D: Ligation and dissection of the sigmoid artery; E: Ligation of the severed superior rectal artery; F: Operation.

Figure 2 Submesenteric artery classification model. A: Type I; B: Type II; C: Type III; D: Type IV. IMA: Inferior mesenteric artery; LCA: Left colic artery; SA: Sigmoid artery.

Figure 3 3D reconstruction of submesenteric artery typing. A: Type I; B: Type II; C: Type III; D: Type IV. IMA: Inferior mesenteric artery; LCA: Left colic artery; SA: Sigmoid artery; SRA: Superior rectal artery.