Related Experiment Video
Updated: Jan 7, 2026

Surgical Robot-Assisted Transanal Specimen Extraction Radical Sigmoidectomy Without an Auxiliary Abdominal Incision
Published on: June 13, 2025
The Usefulness of Robot-assisted Surgery for Elderly Colorectal Cancer Patients
Shoko Tei1, Keisuke Noda1, Tetsuro Tominaga1
1Division of Surgical Oncology, Department of Surgery, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
Background/Aim:
The usefulness of robot-assisted surgery for elderly colorectal cancer patients remains controversial. The aim of this study was to examine the impact of the surgical approach on short-term prognosis in patients aged ≥80 years.
Patients And Methods:
A total of 1,115 colorectal cancer patients aged ≥80 years who underwent surgery at 6 hospitals between 2016 and 2024 were included in the study. Patients were divided into three groups according to surgical approach: robotic surgery (R group, n=55), laparoscopic surgery (L group, n=910), and open surgery (O group, n=150). Patient characteristics and surgical outcomes were compared among the three groups.
Results:
The O group had higher proportions of patients with a body mass index (BMI) <25 kg/m2 (R vs. L vs. O: 72.7% vs. 80.8% vs. 87.3%, p=0.040), a performance status ≥3 (9.1% vs. 18.6% vs. 27.3%, p=0.006), an operation time <240 min (47.3% vs. 59.1% vs. 79.3%, p<0.001), and postoperative complications (9.1% vs. 23.0% vs. 27.3%, p=0.022). Multivariable analysis demonstrated that robotic surgery [odds ratio (OR)=0.243, 95% confidence interval (CI)=0.088-0.668, p=0.006] and BMI <25 kg/m2 (OR=0.626, 95% CI=0.419-0.936, p=0.032) were associated with a reduced risk of postoperative complications.
Conclusion:
Robotic-assisted colorectal surgery in elderly patients is safe, with relatively few complications.

