Comparison of Different Types of Surgery in Treating Patients with Stage IA Non-Small Cell Lung Cancer


  • Study type

  • Study phase

  • Study IDs

  • Describes the nature of a clinical study. Types include:

    • Observational study — observes people and measures outcomes without affecting results.
    • Interventional study (clinical trial) — studies new tests, treatments, drugs, surgical procedures or devices.
    • Medical records research — uses historical information collected from medical records of large groups of people to study how diseases progress and which treatments and surgeries work best.
  • During the early phases (phases 1 and 2), researchers assess safety, side effects, optimal dosages and risks/benefits. In the later phase (phase 3), researchers study whether the treatment works better than the current standard therapy. They also compare the safety of the new treatment with that of current treatments. Phase 3 trials include large numbers of people to make sure that the result is valid. There are also less common very early (phase 0) and later (phase 4) phases. Phase 0 trials are small trials that help researchers decide if a new agent should be tested in a phase 1 trial. Phase 4 trials look at long-term safety and effectiveness, after a new treatment has been approved and is on the market.

  • Site IRB
    • Rochester, Minnesota: 07-005522
    NCT ID: NCT00499330
    Sponsor Protocol Number: CALGB 140503

About this study

RATIONALE: Wedge resection or segmentectomy may be less invasive types of surgery than lobectomy for non-small cell lung cancer and may have fewer side effects and improve recovery. It is not yet known whether wedge resection or segmentectomy are more effective than lobectomy in treating stage IA non-small cell lung cancer.

PURPOSE: This randomized phase III trial is studying different types of surgery to compare how well they work in treating patients with stage IA non-small cell lung cancer.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.

See eligibility criteria


  • Suspected or proven non-small cell lung cancer (NSCLC), meeting both preoperative and intraoperative criteria:
    • Preoperative criteria
      • Peripheral lung nodule ≤ 2 cm by CT scan
        • Center of the tumor must be located in the outer third of the lung in either the transverse, coronal, or sagittal plan
        • Tumor location must be suitable for either lobar or sublobar resection (wedge resection or segmentectomy)
      • No pure ground opacities or pathologically confirmed N1 or N2 disease
    • Intraoperative criteria
      • Histologically confirmed NSCLC
      • Confirmation of N0 status by frozen section examination of nodal levels 4, 7, and 10 on the right side and 5, 6, 7, and 10 on the left side*
        • Levels 4 and 7 nodes may be sampled by mediastinoscopy, endobronchial ultrasound (EBUS), and/or endoscopic ultrasound (EUS), or at the time of thoracotomy or video-assisted thoracoscopic surgery (VATS) exploration* NOTE: *Nodes previously sampled by mediastinoscopy (or EBUS and/or EUS) either immediately before or within 6 weeks of the definitive surgical procedure (thoracotomy or VATS) do not need to be resampled
  • No evidence of locally advanced or metastatic disease


  • ECOG performance status 0-2
  • No other malignancy within the past 3 years except for nonmelanoma skin cancer, superficial bladder cancer, or carcinoma in situ of the cervix


  • No prior chemotherapy or radiotherapy for this malignancy

Participating Mayo Clinic locations

Study statuses change often. Please contact us for help.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Dennis Wigle, M.D., Ph.D.

Open for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office



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