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Removing or Leaving Out One Lymph Node Group During Early Lung Cancer Surgery

Compares removing versus skipping station 4L lymph nodes in early non-small cell lung cancer.

Key facts

Who runs it
Fudan University
Where
Shanghai, ChinaSee the site
Trial code
Registry title
Station 4L Lymph Node Dissection Versus No Dissection in Clinical Stage I Solid Nodule-Type Invasive NSCLC
Status
Recruiting
People taking part
384 people, planned
Started
15 Dec 2025
Expected to end
15 Dec 2030
Type of study
Interventional, 2 groupsOne group gets no study treatment, for comparison.
Treatments tested
  • Station 4L Lymph Node Dissection
Record updated
9 September 2026

Who can take part

AI summary

From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.

The trial is looking for adults with early-stage (stage I) non-small cell lung cancer in the left lung, shown as a single solid nodule, who are planned for lung surgery. Half will have station 4L lymph nodes removed, half will not.

Age
18 to 75 years
Sex
Men and women
Disease stage
Stage I (T1-T2aN0M0) non-small cell lung cancer that can be removed by surgery. A single solid nodule in the left lung, 4 cm (1.6 in) or smaller. Invasive cancer confirmed by a quick pathology check during surgery.
Earlier treatment
No earlier radiotherapy or chemotherapy for this lung cancer. No earlier lung surgery.

Main reasons for not taking part

  • Cancer that is not invasive
  • Surgery other than segmentectomy or lobectomy
  • Tumor not fully removed or tumor left behind
  • Another cancer in the past
  • Earlier lung surgery

The registry criteria, word for word

Show all 12 criteriaShow less

Who can take part

  • Age 18 to 75 years
  • A single solid pulmonary nodule (consolidation-to-tumor ratio of 1.0) located in the left lung
  • Resectable clinical stage I (T1-T2aN0M0) non-small cell lung cancer, with a maximum tumor diameter of 4 cm or less, evaluated by positron emission tomography/computed tomography
  • Planned complete lung resection by segmentectomy or lobectomy with systematic mediastinal lymph node dissection
  • Intraoperative frozen-section pathological confirmation of invasive non-small cell lung cancer before randomization
  • Able to provide written informed consent and willing to complete the protocol-specified follow-up

Who cannot take part

  • Surgical procedure other than segmentectomy or lobectomy
  • Incomplete tumor resection or residual tumor
  • History of previous lung surgery
  • Previous radiotherapy or chemotherapy for the current lung cancer
  • Intraoperative or postoperative pathology indicates noninvasive non-small cell lung cancer
  • History of another malignant tumor

Check if you might fit

Answer for yourself. This is not a decision: only the study team can say whether you can take part.

  • Are you between 18 and 75 years old?

Where in China

  • Fudan University Shanghai Cancer CenterShanghai, ChinaContact: Yang Zhang, MDTaking people

About the trial

What the trial wants to find out

This multicenter, prospective, randomized clinical trial will enroll adults aged 18 to 75 years with resectable clinical stage I (T1-T2aN0M0) invasive non-small cell lung cancer presenting as a single solid nodule (consolidation-to-tumor ratio 1.0) in the left lung. After intraoperative frozen-section confirmation of invasive non-small cell lung cancer and completion of standard lung resection and systematic mediastinal lymph node dissection, participants will be randomly assigned 1:1 either to undergo station 4L lymph node dissection or to omit station 4L dissection. The primary hypothesis is that omitting station 4L dissection is noninferior to performing it with respect to 3-year disease-free survival. Secondary outcomes include 3-year overall survival, perioperative complications, 90-day mortality, and station 4L nodal metastasis.

The 2 groups in the trial

  • Station 4L Lymph Node DissectionTreatment being tested

    Participants undergo complete lung resection and systematic mediastinal lymph node dissection, including surgical dissection of station 4L lymph nodes.

  • No Station 4L Lymph Node DissectionNo study treatment, for comparison

    Participants undergo complete lung resection and systematic mediastinal lymph node dissection, but station 4L lymph nodes are not surgically removed.

Questions to ask the study team

  1. How often do I need to come in, and for how long each time?
  2. Are travel costs paid?
  3. Can I keep my own doctor?
  4. What happens if I want to stop?

Contact the study team: see the registry record → Contacts and Locations

Print a page for my doctor

Data and sources

Registry record
Listed on ClinicalTrials.gov.
Official title
A Multicenter Prospective Randomized Controlled Trial of Station 4L Lymph Node Dissection Versus No Dissection in Clinical Stage I Solid Nodule-Type Invasive Non-Small Cell Lung Cancer
Plain-language title
Removing or Leaving Out One Lymph Node Group During Early Lung Cancer SurgeryGenerated from the registry record. The registry title is the official one.
AI summary
From the trial's eligibility criteria. Read by machine on 12 November 2026.
Fit questions
Built from NCT07801430, who can take part
Record updated
9 September 2026