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Background: Two types of intracorporeal anastomosis can be used in Laparoscopic Right Hemicolectomy (Lap-RH) for right side colon cancer, namely, Functional End to End Anastomosis (FEEA) and Overlap Anastomosis (OLA). However, the efficacy of these two techniques remain unclear. The purpose of this study was hence to compare the short-term outcomes of both techniques. Methods: A total of 32 patients underwent Lap-RH with intracorporeal anastomosis (FEEA in 17 patients and OLA in 15 patients) from July 2014 to July 2016 in our institution. The short-term outcomes of both groups were retrospectively analyzed. Results: There were no patients with cancer of the transverse colon in the FEEA group. Conversely, there were no patients with cancer of the cecum in the OLA group. There were hence significant differences in cancer location between the two groups. Operative time, blood loss, anastomosing time, time to first flatus and length of post-operative stay were similar between the two groups. Conclusions: Our results demonstrated that FEEA is a suitable technique for cecal cancer and ascending colon cancer, whereas OLA is a suitable technique for transverse colon cancer. FEEA and OLA were similar in their level of safety and recovery rates of bowel function after Lap-RH; therefore, we believe that these two types of anastomotic techniques should be chosen appropriately depending on the specific site of the right-side colon cancer.

Intracorporeal Functional End to End Anastomosis Versus Overlap Anastomosis in Laparoscopic Right Hemicolectomy for Cancer: A Single-Center Study