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Updated: Jan 13, 2026

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Surgical Robot-Assisted Transanal Specimen Extraction Radical Sigmoidectomy Without an Auxiliary Abdominal Incision
Published on: June 13, 2025
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Short-Term Outcomes of Robotic-Assisted Sigmoidectomy Using the Senhance Digital Laparoscopy System: A Comparison
Sohei Akuta1,2, Yasumitsu Hirano1, Yasuhiro Ishiyama1
1Gastroenterological Surgery, Saitama Medical University International Medical Center, Saitama, Japan.
The American Surgeon
|January 11, 2026
Summary
Senhance-assisted sigmoidectomy is as safe as conventional laparoscopy for colon cancer, with lower pain scores post-surgery. This robotic approach offers comparable short-term safety outcomes.
Area of Science:
- Surgical Oncology
- Minimally Invasive Surgery
- Robotic Surgery
Background:
- Colorectal cancer, particularly sigmoid colon cancer, presents a significant health challenge.
- Robotic-assisted surgical systems are emerging as innovative tools in surgical procedures.
- The Senhance Digital Laparoscopy System is gaining attention for its potential in cancer surgery.
Purpose of the Study:
- To evaluate the non-inferiority of Senhance-assisted surgery compared to conventional laparoscopy for sigmoid colon cancer.
- To assess the short-term safety profile of robotic-assisted sigmoidectomy.
Main Methods:
- Retrospective single-center study of sigmoidectomy patients (March 2020-2025).
- Propensity score matching to ensure group comparability.
- Analysis of patient characteristics, surgical outcomes, and pathological data, using Clavien-Dindo for complication grading.
Main Results:
- After matching, 45 patients per group were comparable. Senhance surgery had longer operative times (236 min vs. 204 min, P=.001).
- Postoperative pain scores were significantly lower on day 1 (P=.03) and day 3 (P=.02) with Senhance.
- No significant differences were observed in blood loss, complications, or pathological characteristics between the groups.
Conclusions:
- Senhance-assisted sigmoidectomy demonstrates non-inferiority to conventional laparoscopic surgery regarding short-term safety.
- Robotic assistance may lead to reduced postoperative pain in sigmoid colon cancer surgery.
- Further optimization of surgical techniques may be needed to address operative time differences.

