A Standardized Surgical Procedure Involving Dorsal Dissection from the Lateral Duodenojejunal Flexure in Patients with Splenic Flexure Colon Cancer

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  • Nagayoshi Kinuko
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Mitsubuchi Haruka
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Watanabe Kan
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Hisano Kyoko
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Tamura Koji
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Sada Masafumi
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Mizuuchi Yusuke
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Nagai Shuntaro
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University
  • Nakamura Masafumi
    Department of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University

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Other Title
  • 脾弯曲部結腸癌に対する空腸曲外側からの背側授動先行アプローチによる定型化手技

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<p>Objective: We assessed the optimal regions for central lymph node dissection while evaluating the safety of our standardized surgical procedure. The procedure involved dorsal mesenteric mobilization from the outside of the duodenojejunal flexure in patients with splenic flexure colon cancer.</p><p>Methods: Fifty patients with splenic flexure colon cancer, who received surgical treatment between 2008 and 2020, were assessed. The individual distribution of feeding arteries and lymph nodes was compared according to tumor localization. Surgical outcomes were compared before (n＝32) and after (n＝18) standardization of the surgical procedure.</p><p>Results: Tumors of the transverse colon had a wide variety of feeding arteries: 26.3% of tumors were fed by the left branch of the middle colic artery, 15.8% by the left colon artery (LCA), and 54.1% were fed by two or more vessels. The LCA alone fed 69% of the tumors in the descending colon. After standardizing procedures, surgical duration was significantly shortened (345 vs. 277 min; P＝0.03). There was no difference in post-operative complications between the two groups.</p><p>Conclusion: Our extensive anatomical knowledge on central lymph node dissection aided our standardized procedure, which was deemed a safe surgical treatment for splenic flexure colon cancer.</p>

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