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Laparoscopic Hemicolectomy vs Laparoscopic Transverse Colectomy
            Table 1: Demographic, clinicopathological, operative, postoperative,   Five years of OS, PFS, and DFS rates were slightly longer in the
            and outcome findings of all included patients      hemicolectomy groups than in the transverse colectomy group,
                                                  All population  but the results were not statistically significant.
                                                                  All these data analyses confirm the advantages of hemicolectomy
            Patients’ clinical characteristics and outcomes  N  %  over transverse colectomy.
            Age (years)                            55 (29–80)
            Sex                    Female          42  35.0%
                                   Male            78  65.0%   dIscussIon
            Size                   ≤5 cm           75  62.5%   Although transverse colon cancer forms about 10th of all colon cancer
                                   >5 cm           45  37.5%   cases, a consensus about the best management strategy for such
                                                                              6
            Histopathological  Conventional adenocarcinoma  105  85%  cancer is still lacking.  Survival rates of cancer located in the transverse
            subtype            Mucoid carcinoma    15   15%    colon are lower than survival rates of cancer located in other parts
                                                                         7
                                                               of the colon.  This dismal outcome is mostly due to sending lymph
            DUKE stage               A             36  30.0%   node metastases to lymph nodes located around both superior and
                                     B             33  27.5%   inferior mesenteric vessels in addition to proximity to vital abdominal
                                     C             51  42.5%   organs that made surgical management is difficult with a higher
            Stage                    I             36  30.0%   incidence of postoperative complications. 3
                                     II            43  35.8%      Previous studies compared both conservative approaches by
                                    III            41  34.2%   surgical removal of only the transverse colon, while others prefer the
            LN                      No             79  65.8%   extended right or left hemicolectomy to achieve more treatment
                                                                                                    8
            metastases              Yes            41  34.2%   that is radical and removal of more lymph nodes.
                                                                  Moreover, laparoscopic-assisted surgery is now considered
            Number of lymph nodes harvested         20 (9–28)  the best management approach for colon and rectal cancers. 9,10
            Grade                    I             33  27.5%      Most previous studies compared laparoscopic and open
                                     II            78  65.0%   surgical management of colon cancer, 11,12  but only a few studies
                                    III            9     7.5%  compared laparoscopic-assisted conservative transverse colectomy
            Length of the specimen                 50 (20–100)  and extended hemicolectomy for management of transverse colon
            Margin status           R0            114  95.0%   cancer.
                                    R1             6     5.0%     In the present study, we included cases with mid-transverse
            Duration of              5             16  13.3%   colon  cancer  that was  managed  by either  right  or left
                                                               hemicolectomy compared them by cases managed by transverse
            hospital stay            6             28  23.3%   colectomy.
                                     7             31  25.8%      We showed that both laparoscopic-assisted right or
                                     8             26  21.7%   hemicolectomy or laparoscopic-assisted transverse colectomy
                                     9             19  15.8%   could be proper management options for cancer located in the
            30-day                  No            114  95.0%   mid-transverse colon, as we showed that operative, clinical, and
            morbidity               Yes            6     5.0%  oncological outcomes were nearly the same for both groups, but
            30-day                  No            117  97.5%   the incidence of postoperative complications was higher in patients
            mortality               Yes            3     2.5%  underwent transverse in comparison with patients underwent
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                                                               hemicolectomy which is similar to the results of Matsuda et al.  and
            Operative time minute                 110 (90–150)  Milone et al. 1
            Operative                0            114  95.0%      We showed that as the number of dissected lymph nodes
            complications            1             6     5.0%  is more in the hemicolectomy group than that in the transverse
            Postoperative            0            107  89.2%   colectomy group, hemicolectomy leads to more radical
            complications            1             13  10.8%   management than conservative transverse colectomy.
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            Relapse                 No             96  80.0%      Leijssen et al.  and van Rongen et al.  showed that despite
                                    Yes            24  20.0%   fewer harvested lymph nodes in the transverse colectomy group,
            Death                   No            107  89.2%   they showed that no differences between transverse colectomy
                                                               and hemicolectomy regarding operative and postoperative
                                    Yes            13  10.8%   complications concluded that performing transverse colectomy
                                                               is an oncologically safe and suitable management approach for
               The group of patients in the hemicolectomy group experienced   cancer of the mid-transverse colon stages from I to III, but the
            lower rates of intraoperative and perioperative complications than   limitation of both studies is the small number of included patients
            the transverse colectomy group (p = 0.002, p = 0.017).  made their results need further modifications.
                                                                             4,5
               There were no statistically significant differences in both groups   Matsuda et al.  showed that both transverse colectomy and
            regarding 30-day postoperative outcomes.           hemicolectomy have similar advantages and oncological outcomes,
                                                               but their study was retrospective and included a small number of
            Survival and Patients’ Outcome Results             patients.
            There were no statistically significant differences between both   We showed that the duration of operative time was longer
            groups, regarding disease, local or systemic recurrence, progression,   in the hemicolectomy group than that in the transverse
            and the use of or response to chemotherapy.        colectomy group, but we showed that the group of patients

                                                 World Journal of Laparoscopic Surgery, Volume 14 Issue 3 (September–December 2021)  217
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