Abstract
The aim of this study was to clarify internal hernia (IH) characteristics after laparoscopic gastrectomy. This was a retrospective study of 1943 consecutive gastric cancer patients who underwent surgery at our institute between 2004 and 2015. Since 2013, our technique includes antecolic Roux-en-Y (RY) with closure of all mesenteric defects during laparoscopic total gastrectomy (LTG) as standard. Postoperative IH was only detected in patients who underwent total gastrectomy with RY reconstruction. Furthermore, the incidence of IH was significantly higher after LTG than after open total gastrectomy (4.9% vs. 1.0%; P=0.005). IH after LTG occurred in 8.0% of patients before standardization with closure of the mesenteric defects, but no IH was observed after standardization (P=0.047). Closure of all mesenteric defects is recommended for gastric cancer patients who undergo LTG with antecolic RY. Registration number: UMIN000009163/000025029 (www.umin.ac.jp/ctr/).
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