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Article Abstract
Background: Complete mesocolon excision (CME) and D3-lymphadenectomy concepts have gained popularity for the surgical treatment of right colon cancer in comparison to the conventional laparoscopic right hemicolectomy (CLRH). The rationale of CME is to dissect the embryological planes between the mesenteric plane and the parietal fascia to remove the mesentery within a complete envelope of mesenteric fascia and visceral peritoneum that contains lymph nodes, the central vascular ligation, and adequate bowel length to remove involved pericolic lymph nodes in the longitudinal direction, having as the main goal to improve the oncological results. CME with D3-lymphadenectomy is challenge since involves the excision of the lymph adipose tissue covering the medial edge of the superior mesenteric vein (SMV) (trunk of Gillot, TG), and the gastrocolic trunk of Henle (GTH). We describe a LRH with CME using a cranial approach allowing an easier central vessels origin identification.
Technique: Through the supramesocolic approach, gastrocolic ligament is opened and the GTH and the middle colic artery (MCA) and vein (MCV) origins are identified. Hepatic flexure is mobilized, and a gauze is placed above the mesenteric vessels. Then, the SMV is identified, dividing the ileocolic vessels origin. The plane between the Gerota and Toldt fascias is opened, identifying duodenum, pancreas, and the gauze previously placed. Following this plane and the SMV along the TG, the GTH and its branches are identified. The superior right colic vein, and the MCA and MCV right branches are divided. After that, colon is fully mobilized laterally opening the parietocolic gutter and an intracorporeal anastomosis is performed.
Conclusion: CME could lead to an improvement of oncological results due to a wider mesocolic excision in comparison to conventional D2-lymphadenectomy. Cranial approach facilitates the vessels origin identification to perform a true central ligation.
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| http://dx.doi.org/10.1007/s00464-024-11461-y | DOI Listing |
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