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Updated: Apr 8, 2026

Surgical Robot-Assisted Transanal Specimen Extraction Radical Sigmoidectomy Without an Auxiliary Abdominal Incision
Published on: June 13, 2025
[Laparoscopic-assisted natural orifice specimen extraction radical left colectomy]
Shifeng Zhang1, Zhijie Ding, Xingfeng Qiu
1Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361004, China. jianchunfh2@sina.com.
Laparoscopic-assisted anal specimen extraction radical left colectomy is a safe and feasible surgical approach. This minimally invasive technique demonstrated no complications and good patient outcomes in a small study.
Area of Science:
- Colorectal Surgery
- Minimally Invasive Surgery
- Surgical Oncology
Background:
- Radical left colectomy is a standard procedure for colorectal cancer.
- Minimally invasive techniques aim to reduce patient morbidity.
- Natural orifice specimen extraction offers potential advantages in reducing surgical trauma.
Purpose of the Study:
- To evaluate the feasibility and safety of laparoscopic-assisted natural orifice specimen extraction radical left colectomy.
- To assess the clinical efficacy and short-term outcomes of this novel surgical approach.
Main Methods:
- Retrospective analysis of 15 patients undergoing laparoscopic-assisted anal specimen extraction radical left colectomy.
- Utilized a self-developed surgical instrument (Cai tube).
- Data collected included clinicopathological information, operative details, and postoperative outcomes.
Main Results:
- No perioperative deaths or postoperative complications (e.g., anastomotic bleeding/leakage) were observed.
- Median operative time: 257 minutes; median blood loss: 50 ml.
- Median time to first flatus: 3 days; median hospital stay: 14 days.
- Patients reported good quality of life, normal defecation, and no tumor recurrence/metastasis at 1-8 months follow-up.
Conclusions:
- Laparoscopic-assisted anal specimen extraction radical left colectomy is a safe and feasible surgical option.
- This technique appears to provide good short-term oncological and functional outcomes.
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