GI Endoscopy · 1 min read
Standard Polypectomy Tooling vs Advanced Resection
Clinical Bottom Line
| Procedure Class | Resection Target | Core Instrumentation |
|---|---|---|
| Cold Snare Polypectomy (CSP) | Diminutive/Small polyps (<10mm). | Dedicated thin-wire stiff cold snare. No electrocautery. |
| Endoscopic Mucosal Resection (EMR) | Large flat sessile polyps (>10mm). | Submucosal injection needle (lifting agent) + Hot snare. |
| Endoscopic Submucosal Dissection (ESD) | Superficial submucosal invasive cancers. | Electrosurgical needle-knife (DualKnife), distal caps, Coagrasper. |
Stratifying the Resection Toolkit
The instrumentation required to remove a polyp scales exponentially with the lesion's size and morphologic complexity. For 90% of encountered adenomas, which are diminutive (under 5mm), cold snare polypectomy is the definitive standard. The lack of electrocautery nearly eliminates the risk of delayed thermal injury.
The Demands of Complex Mucosal Excision
When tackling a 30mm laterally spreading tumor (LST) in the right colon, the standard snare is insufficient. The endoscopist must employ Endoscopic Mucosal Resection (EMR), physically injecting viscous fluid (hyaluronic acid or proprietary lifting agents) into the submucosal space. This artificially creates a thick protective cushion between the polyp and the muscle layer, allowing the safe deployment of a large hot snare. Endoscopic Submucosal Dissection (ESD) requires even specialized tools: micro-knives designed to meticulously carve away the submucosa layer by layer.
Clinical guidelines summarized by the Gastroscholar Research Team. Last updated: 2026. This article is intended for physicians.
For your teaching file
Save this article as a PDF
Drop your email and we'll open a print-ready version you can save as a PDF — and you'll start getting our weekly GI endoscopy newsletter.