The use of advanced Colorectal ESD techniques has revolutionized the management of large or complex colorectal lesions. Traditionally, conventional endoscopic submucosal dissection (C-ESD) provides superior en-bloc resection rates. However, its technical complexity often results in prolonged procedure times. To address this challenge, many endoscopists utilize hybrid ESD (H-ESD) with snaring for non-malignant lesions to facilitate easier removal. A recent study by Balanis et al. highlights the real-world application and learning curve of these techniques in a community-based hospital setting in Switzerland.

Evaluating the Learning Curve in Colorectal ESD Techniques

Furthermore, the research demonstrated a significant reduction in procedural time as endoscopists gained experience. In the initial phase of the learning curve, the mean procedure time was 104 minutes. Conversely, after the first 45 procedures, the average time dropped sharply to 54 minutes. This improvement underscores the importance of persistent practice and structured training. Although H-ESD can save time, the study noted that C-ESD achieved significantly higher en-bloc resection rates compared to the hybrid approach. Specifically, C-ESD reached a 73% en-bloc rate, whereas H-ESD achieved only 51%.

Moreover, the overall recurrence rate at the first follow-up was 8.8%, with no statistically significant difference between the two methods. Consequently, while hybrid techniques offer efficiency for certain non-malignant cases, conventional methods remain the gold standard for achieving complete, single-piece resections. Clinicians in regional settings must balance these outcomes with their local expertise and equipment availability. Therefore, mastering these advanced colorectal ESD techniques requires a focused effort over approximately 45 cases to optimize procedural efficiency and patient safety.

Frequently Asked Questions

How does Hybrid ESD compare to Conventional ESD for en-bloc resection?

Hybrid ESD (H-ESD) typically results in lower en-bloc resection rates compared to Conventional ESD (C-ESD). In recent community hospital data, C-ESD achieved a 73% en-bloc rate, whereas H-ESD achieved 51%, though both techniques showed similar recurrence rates for non-malignant lesions.

What is the impact of the learning curve on ESD procedure times?

The learning curve significantly impacts procedural efficiency. Studies indicate that after approximately 45 procedures, the mean time for colorectal ESD can decrease by nearly 50%, dropping from over 100 minutes to roughly 54 minutes as the operator becomes proficient.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Balanis T et al. Endoscopic Submucosal Dissection for Colorectal Lesions in a Community-based European Hospital: Experience and Learning Curve. J Gastrointestin Liver Dis. 2026 Mar 27. doi: 10.15403/jgld-6540. PMID: 41894717.

Ferlitsch M, et al. Colorectal polypectomy and endoscopic mucosal resection (EMR): European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline – Update 2024. Endoscopy. 2024;56.

Spychalski M, et al. Colorectal endoscopic submucosal dissection (ESD) in the West - when can satisfactory results be obtained? A single-operator learning curve analysis. Scand J Gastroenterol. 2017 Dec;52(12):1442-1452.