ASGE Technology Update - ESD Is Expanding Rapidly in Western Practice: GIE | August 2026

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Endoscopic submucosal dissection (ESD) enables en bloc resection of large superficial GI neoplasia, allowing accurate histopathology and potentially curative R0 resection while avoiding surgery. This ASGE technology review summarizes current ESD knives, traction systems, stabilization devices, closure methods, techniques, safety considerations, training, and emerging technologies.

Why is this important?

ESD permits en bloc resection of lesions >2 cm that would often require piecemeal EMR.

It is particularly useful for lesions with fibrosis, recurrence after prior resection, and selected early malignancies.

Western adoption is increasing, but technical complexity, training, procedure time, adverse events, and reimbursement remain barriers.

New traction, stabilization, and robotic technologies aim to make ESD safer and more reproducible.

Key Takeaways:

En bloc resection is the principal advantage of ESD, enabling reliable assessment of lateral/deep margins and curative resection criteria.

ESD equipment now includes multiple knife designs: noninsulated-tip, insulated-tip, scissor, shaped, and bipolar devices.

Maintaining a durable submucosal lift is essential to separate the lesion from muscularis propria and reduce bleeding and perforation.

Transparent distal caps remain fundamental for visualization and countertraction during submucosal dissection.

Traction is increasingly central to modern ESD, particularly for colorectal, fibrotic, recurrent, or gravity-dependent lesions.

Available traction strategies range from simple clip-line or clip-loop techniques to dedicated dynamic traction systems.

Luminal stabilization devices such as overtubes and double-balloon platforms can improve scope control during difficult colonic ESD.

The pocket-creation method can improve stability, preserve the submucosal cushion, shorten procedure time, and reduce adverse events compared with conventional colorectal ESD.

Submucosal tunneling is particularly useful for large or semicircumferential esophageal lesions.

Water-pressure ESD can facilitate submucosal access in fibrotic colorectal and technically difficult duodenal lesions.

Hybrid ESD–EMR may shorten procedures but can reduce en bloc resection rates and should be selectively used.

Defect closure appears beneficial in selected sites, particularly the duodenum and colon, where delayed bleeding and perforation risk can be important.

Delayed bleeding varies by site and appears highest after duodenal ESD; exposed-vessel coagulation and selective closure can reduce risk.

Overall perforation rates in Western series are around 3%, with many immediate perforations manageable endoscopically.

Esophageal ESD involving >50% of the circumference carries substantial stricture risk; preventive steroid strategies or stenting may be required.

ESD should be performed by endoscopists with advanced skills in lesion assessment, EMR, hemostasis, and complication management.

Suggested proficiency benchmarks include ≥90% en bloc resection, ≥80% complete resection, <5% adverse events, and adequate dissection speed.

Training should progress from lower-complexity sites such as the rectum and distal stomach toward esophagus, proximal stomach, and colon.

Lack of standardized Western training remains one of the major barriers to broader implementation.

Robotic endoscopic platforms, improved traction devices, virtual-reality simulation, and AI-assisted optical diagnosis represent important future directions.

New dedicated upper- and lower-GI ESD CPT codes are expected to improve reimbursement and potentially accelerate adoption in the United States.

Clinical Impact:

The evolution of ESD is shifting the procedure from a highly specialized freehand technique toward a more device-assisted, traction-guided, and standardized form of endoscopic surgery.

The practical message is that successful ESD depends not simply on the knife, but on the entire procedural ecosystem:

lesion selection → stable scope position → sustained lift → effective traction → controlled dissection → prophylactic hemostasis → selective defect closure.

Bottom Line:

ESD is becoming a core organ-preserving treatment for selected superficial GI neoplasia. Traction, pocket/tunnel techniques, better scope stabilization, and improved closure devices are making the procedure safer and more efficient, but structured training and high procedural volume remain essential for good outcomes.