Minimally invasive surgery
- Minimally invasive transanal excision for rectal tumors: technical feasibility compared to conventional approach
-
Ji Yeon Mun, Gyu Sung Geong, Nina Yoo, Hyung Jin Kim, Hyeon-Min Cho, Bong-Hyeon Kye
-
Ann Coloproctol. 2025;41(2):162-168. Published online April 29, 2025
-
DOI: https://doi.org/10.3393/ac.2024.00864.0123
-
-
4,066
View
-
123
Download
-
1
Web of Science
-
1
Citations
-
Graphical Abstract
Abstract
PDF
Supplementary Material

- Purpose
The technique for transanal resection of rectal tumors has evolved from conventional methods to minimally invasive approaches. However, the research comparing long-term results between these approaches is limited.
Methods
Between 2016 and 2022, a total of 133 patients who underwent transanal excision were analyzed. Patients were classified into 2 groups according to surgical approach: conventional transanal approach (CTA) and minimally invasive transanal approach (MTA). Medical records were analyzed to compare surgical and oncological outcomes between the 2 groups.
Results
There were no significant differences observed in patient’s demographics and tumor characteristics, except the MTA group exhibited a statistically longer distance from the anal verge. Although statistical significance was not reached, the MTA group demonstrated a 100% margin-negative rate in contrast to the CTA group, which had worse outcomes for both margin status and fragmentation. Recurrence was observed only in the CTA group containing pT1 rectal cancer and grade 1 neuroendocrine tumor, with negative margins and no fragmentation.
Conclusion
The minimally invasive approach did not demonstrate statistical superiority but showed technical feasibility through the absence of margin-positive cases and the use of the clip handle method. Further studies are needed to validate these findings and assess broader applicability.
-
Citations
Citations to this article as recorded by

- Minimally invasive transanal excision over conventional transanal excision: pursuing the perfect removal of early rectal cancer
HyungJoo Baik
Annals of Coloproctology.2025; 41(2): 105. CrossRef