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LRR—low-tie IMA. (A) Identification of IMA, SRA and LCA; (B) IMA root lymphadenectomy; (C) preserving autonomic nerve plexus; (D) low division of IMA. LRR, laparoscopic rectal resection; IMA, inferior mesenteric artery; SRA, superior rectal artery; LCA, left colic artery.
