Laparoscopic lymph node dissection around the inferior mesenteric artery for left-sided colon and rectal cancer

Abstract

Lymph node dissection is a critical part of surgery for colorectal cancer. Japanese D3 and complete mesocolic excision are two unique principles for lymph node dissection in colorectal cancer. Laparoscopic surgery magnifies the targets and provides insight about the micro-anatomy through high-quality, high-definition imaging, which benefits the surgeon. Although laparoscopic colorectal resection is feasible, there is no universal procedure. We describe in detail the anatomy viewed during lymph node dissection around the inferior mesenteric artery. Visual recognition of two folds on both sides of Landzert's fossa is the critical first step, as recognizing these structures allows laparoscopic procedures to be performed safely. Our findings suggest that this procedure is feasible and effective for the surgical treatment of patients with left-sided colon or rectal cancer.

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