Related Experiment Video
Updated: Apr 21, 2026

Clinical Application of Single-Surgeon, Three-Port, Laparoscopic Resection for Colorectal Cancer with Natural Orifice Specimen Extraction
Published on: March 24, 2023
Laparoscopic intersphincteric resection using needlescopic instruments.
Kazuhiro Sakamoto1, Yu Okazawa1, Rina Takahashi1
1Department of Coloproctological Surgery, Juntendo University, Faculty of Medicine, Tokyo, Japan.
Needlescopic laparoscopic intersphincteric resection (Lap ISR) is a minimally invasive approach for very low rectal cancer, preserving anal function. This technique proved feasible in initial patient cases, avoiding extra ports or instrument changes.
Area of Science:
- Colorectal Surgery
- Minimally Invasive Surgery
- Surgical Oncology
Background:
- Very low rectal cancer poses challenges for preserving anal function.
- Intersphincteric resection (ISR) is a surgical option to maintain anal function.
- Laparoscopic approaches aim to reduce surgical invasiveness.
Purpose of the Study:
- To evaluate the feasibility of laparoscopic intersphincteric resection (Lap ISR) using needlescopic instruments.
- To assess the efficacy of needlescopic instruments in performing Lap ISR for very low rectal cancer.
Main Methods:
- Laparoscopic intersphincteric resection (ISR) performed with needlescopic instruments.
- Standard laparoscopic ports for camera and 5-mm ports for instruments.
- Needlescopic forceps used for dissection and specimen extraction via the anus.
- Hand-sewn coloanal anastomosis and covering ileostomy created.
Main Results:
- Lap ISR was successfully performed in two patients with very low rectal cancer.
- No additional ports were required.
- Conventional 5-mm forceps were not needed as a substitute for needlescopic instruments.
- The procedure demonstrated feasibility for minimally invasive surgery.
Conclusions:
- Needlescopic laparoscopic intersphincteric resection (Lap ISR) is a feasible minimally invasive surgical technique.
- This approach can be effectively utilized for treating very low rectal cancer while preserving anal function.
- Needlescopic instruments offer a viable option for advanced laparoscopic rectal surgery.
More Related Videos
03:34Laparoscopic Duodenum-Preserving Pancreatic Head Resection via Inferior Infracolic Approach: A Surgical Approach for Benign Lesions
Published on: February 9, 2024
07:22Surgical Robot-Assisted Transanal Specimen Extraction Radical Sigmoidectomy Without an Auxiliary Abdominal Incision
Published on: June 13, 2025