Robotic oesophagectomy retrieves more lymph nodes, with similar safety

Design

Phase 3 randomised trial at 4 high-volume centres

Population

202 adults with oesophageal or junctional adenocarcinoma (101 robotic, 101 conventional)

Primary outcome

Number of resected lymph nodes

Effect

Median 36 vs 32 nodes (P=.005); R0 99.0% vs 97.0%; 90-day mortality 1.0% vs 3.0% (P=.62)

A phase 3 randomised trial at four high-volume centres compared robot-assisted with conventional minimally invasive oesophagectomy in adenocarcinoma of the oesophagus or junction. Of 218 randomised, 202 had transthoracic oesophagectomy (101 per arm).

The primary endpoint, lymph node yield, was higher with the robot: median 36 against 32 (P=.005). Luminal R0 resection was 99.0% against 97.0%. Complication rates were similar, 90-day mortality was 1.0% against 3.0% (P=.62), and 1-year survival did not differ.

The trial shows a technical advantage on a surrogate, node count. It does not show better cancer survival. The authors argue for robotic surgery as a standard approach, which is their conclusion, not a settled guideline position. Cost and access are real considerations outside high-volume centres, and Indian centres should weigh local robotic availability and experience.

• Node yield rose by about four nodes (median 36 vs 32), a surrogate and not a survival result.
• Complication and 90-day mortality rates did not differ significantly between approaches.
• Survival at one year was similar; longer follow-up is the question that matters.
• Centre volume and experience matter more than platform where robotics is not available.

Why it matters

It moves the argument from feasibility to whether a more extensive node harvest translates into survival.

Don't overread it

Node yield is a surrogate; survival follow-up was short and the centres were high-volume.

The statistics, in plain English

A P value of .62 for 90-day mortality means the trial could not show a difference in a rare event; 1 versus 3 deaths in 101 patients each is far too few to compare. The node-count difference is significant, but node count is a measure of the operation, not of what happens to the patient.

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