Research ArticleClinical Studies

Meta-analysis of Robot-assisted Versus Laparoscopic Surgery for Rectal Cancer

HIROSHI OHTANI, KIYOSHI MAEDA, SHINYA NOMURA, OSAMU SHINTO, YOKO MIZUYAMA, HIROJI NAKAGAWA, HISASHI NAGAHARA, MASATSUNE SHIBUTANI, TATSUNARI FUKUOKA, RYOSUKE AMANO, KOSEI HIRAKAWA and MASAICHI OHIRA
In Vivo May 2018, 32 (3) 611-623;

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Figures

  • Figure 1.
    Figure 1.

    Flow diagram of this meta-analysis in accordance with PRISMA Statement.

  • Figure 2.
    Figure 2.
    Figure 2.
    Figure 2.
    Figure 2.

    Meta-analysis of the short-term outcomes for rectal cancer. a) The operative time for RAS was significantly greater than that for LAS (p<0.00001; upper part). No significant difference was found in the intraoperative estimated blood loss (p=0.44; lower part). b) The occurrence rate of overall complications did not differ significantly between RAS and LAS (upper part). The occurrence rate of anastomotic leakage did not differ significantly between the two procedures (middle part). The occurence rate of ileus did not differ significantly between the two procedures (lower part). c) The rate of the patients undergoing the neoadjuvant chemoradiotherapy was significantly higher in RAS than in LAS (first part). The rate of the patients with lower rectal cancer was significantly higher in RAS than in LAS (second part). The distance from anal verge to the lower margin of tumor was significantly shorter in RAS than in LAS (third part). The conversion rate of RAS was significantly lower than that of LAS (fourth part).

  • Figure 3.
    Figure 3.

    Meta-analysis of long-term outcomes for rectal cancer. a) The rate of overall recurrence was not significantly different between RAS and LAS (upper part). We found no significant difference in 3-year overall survival rate between RAS and LAS (lower part). b) Urinary dysfunction did not differ significantly between the 2 groups (upper part). There was no significant difference in erectile dysfunction between robotic and laparoscopic groups (lower part).

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Meta-analysis of Robot-assisted Versus Laparoscopic Surgery for Rectal Cancer
HIROSHI OHTANI, KIYOSHI MAEDA, SHINYA NOMURA, OSAMU SHINTO, YOKO MIZUYAMA, HIROJI NAKAGAWA, HISASHI NAGAHARA, MASATSUNE SHIBUTANI, TATSUNARI FUKUOKA, RYOSUKE AMANO, KOSEI HIRAKAWA, MASAICHI OHIRA
In Vivo May 2018, 32 (3) 611-623;
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