Abstract
Purpose
The purpose of this study was to evaluate the advantages of robot-assisted laparoscopic surgery (RALS) for lower rectal cancer and for visceral obesity cases, which have been regarded as challenging situations in rectal cancer surgery, comparing their surgical outcomes with those of conventional laparoscopic surgery (CLS).
Methods
Patients who underwent robotic or laparoscopic total mesorectal excision for rectal cancer were included in this retrospective study. Surgical outcomes including perioperative, postoperative, and pathological data were compared between the RALS and CLS groups. Patients were stratified into obese and non-obese groups according to visceral fat area (VFA). Obesity was defined by VFA ≥130 cm2.
Results
Two hundred thirty-six patients were enrolled, including 127 cases in the RALS group and 109 cases in the CLA group. A total of 82 (34.7 %) cases were categorized as VFA obese, including 52 cases in the RALS and 30 cases in the CLS groups. RALS for lower rectal cancer was associated with less blood loss (p = 0.007), a lower overall complication rate (9.4 % in RALS vs 23.9 % in CLS, p = 0.003), and shorter postoperative stay (p < 0.01) than CLS, with similar operative time and pathological results. The overall complication rate was significantly lower in the RALS group with VFA obesity; blood loss was significantly less and the postoperative stay was shorter in the RALS group with visceral obesity.
Conclusions
The present study demonstrated that RALS has some advantages in terms of surgical outcomes over CLS in challenging situations of rectal cancer surgery, such as lower rectal cancer cases and visceral obesity cases.
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