Surgical Necrosectomy Retains a Key Role in WON : Ann Surg | May 2026

Introduction

Walled-Off Pancreatic Necrosis remains one of the most challenging complications of severe pancreatitis. Over the last decade, minimally invasive and endoscopic step-up approaches have increasingly replaced open surgery, with Direct Endoscopic Necrosectomy emerging as a dominant strategy for retrogastric collections.

Problem Statement

Although endoscopic necrosectomy is widely adopted, comparative real-world data evaluating surgical transgastric approaches versus endoscopic techniques for retrogastric pancreatic necrosis remain limited.

Summary

This retrospective Stanford cohort study compared outcomes between Laparoscopic Transgastric Necrosectomy and direct endoscopic necrosectomy in patients with retrogastric walled-off necrosis.

The investigators analyzed 106 patients treated over more than a decade, with similar baseline demographics and pancreatitis severity characteristics between groups. Importantly, both approaches demonstrated comparable overall safety profiles, including similar complication, mortality and 30-day readmission rates.

A key finding was procedural efficiency. Although total procedural time was similar between approaches, complete debridement was achieved after a single intervention far more frequently with laparoscopic transgastric necrosectomy, whereas endoscopic therapy more commonly required multiple sessions.

This observation is clinically important because repeated necrosectomy sessions increase procedural burden, healthcare utilization, cumulative sedation exposure and prolonged hospitalization.

The study also demonstrated a significant interaction between disease severity and hospital length of stay. In patients with higher APACHE-II scores, laparoscopic transgastric necrosectomy was associated with shorter hospitalization compared with endoscopic management.

These findings challenge the increasingly simplistic perception that endoscopic therapy should universally replace surgical intervention in pancreatic necrosis management.

Instead, the data support a more individualized strategy in which patient physiology, necrosis burden, anatomical characteristics and anticipated procedural efficiency guide modality selection.

The work is particularly relevant because retrogastric necrosis occupies a unique anatomical niche where both endoscopic and minimally invasive surgical transgastric access are technically feasible.

Importantly, the study also highlights the maturation of minimally invasive pancreatic surgery. Contemporary laparoscopic necrosectomy differs substantially from historical open necrosectomy approaches traditionally associated with major morbidity.

The reduced need for repeat interventions after laparoscopic treatment may reflect superior mechanical debridement capability, particularly in patients with dense necrotic burden or organized debris less amenable to endoscopic clearance.

At the same time, the study reinforces the continued importance of multidisciplinary pancreatitis programs integrating advanced endoscopy, pancreatic surgery, interventional radiology and critical care expertise.

The authors appropriately acknowledge that endoscopic approaches remain highly effective and less invasive for many patients. However, the results suggest that surgical transgastric necrosectomy should not be viewed merely as salvage therapy after endoscopic failure.

Clinically, these findings may be particularly relevant for patients with extensive necrosis, high physiologic severity scores or anticipated need for multiple endoscopic sessions.

The study also contributes to the evolving debate regarding optimal endpoint definitions in necrotizing pancreatitis intervention, where “procedural success” increasingly includes treatment burden, reintervention frequency and resource utilization rather than technical success alone.

Limitations include the retrospective single-center design and potential selection bias regarding procedural allocation. Nevertheless, the long study period and contemporary multidisciplinary expertise provide meaningful real-world insight.

Overall, this study supports laparoscopic transgastric necrosectomy as a safe, efficient and clinically relevant option for retrogastric pancreatic necrosis, reinforcing the continuing role of minimally invasive surgical approaches alongside advanced endoscopic therapy in modern pancreatic necrosis management.