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Intraoperative Longitude-Latitude-Depth Localization Versus Preoperative CT-Guided Percutaneous Lung Puncture Localization for 0.8-2 cm Peripheral Pulmonary Nodules

23 giugno 2026 aggiornato da: Zhenguo Sun, Qilu Hospital of Shandong University

Intraoperative Longitude-Latitude-Depth Three-Dimensional Localization Versus Preoperative CT-Guided Percutaneous Lung Puncture Localization for the Treatment of 0.8-2 cm Peripheral Pulmonary Nodules: A Multicenter, Randomized, Open-Label, Non-Inferiority Clinical Trial

The goal of this clinical trial is to learn whether intraoperative longitude-latitude-depth three-dimensional localization (LLD localization) is non-inferior to preoperative CT-guided percutaneous lung puncture localization for identifying 0.8-2 cm peripheral pulmonary nodules in adults undergoing video-assisted thoracoscopic surgery (VATS)-assisted sublobar resection. It will also evaluate the safety and perioperative effectiveness of the two localization methods. The main questions it aims to answer are:

  1. Is the localization accuracy rate of LLD localization non-inferior to that of CT-guided percutaneous lung puncture localization?
  2. Does LLD localization improve perioperative outcomes, including localization time, postoperative recovery, pain, quality of life, and perioperative complication rates?

Researchers will compare LLD localization with CT-guided percutaneous lung puncture localization to determine whether LLD localization provides comparable localization accuracy while reducing procedure-related complications and improving perioperative outcomes.

Participants will:

  1. Be randomly assigned in a 1:1 ratio to either the LLD localization group or the CT-guided percutaneous lung puncture localization group.
  2. Undergo pulmonary nodule localization using the assigned localization method.
  3. Receive VATS-assisted sublobar resection following localization.
  4. Be assessed for localization accuracy, perioperative complications, localization time, postoperative chest drainage tube removal time, oxygenation index, postoperative hospital stay, pain scores, and quality-of-life outcomes.
  5. Complete follow-up assessments at 1, 3, and 6 months after surgery.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Peripheral pulmonary nodules, particularly small subsolid nodules, are increasingly detected due to the widespread use of low-dose computed tomography (CT) screening. Accurate intraoperative identification of these nodules remains challenging during video-assisted thoracoscopic surgery because many lesions are difficult to visualize or palpate after lung collapse. Reliable localization is therefore essential to facilitate precise sublobar resection while preserving healthy lung tissue.

Preoperative CT-guided percutaneous localization techniques are widely used in clinical practice. However, these procedures require additional preoperative intervention and may be associated with complications such as pneumothorax, pulmonary hemorrhage, hemothorax, patient discomfort, and increased procedural complexity. Furthermore, successful localization depends on radiologic resources and coordination between multiple departments.

The longitude-latitude-depth (LLD) localization method is a novel intraoperative three-dimensional localization strategy developed to identify pulmonary nodules using anatomical reference lines and preoperative imaging measurements. The method utilizes the natural longitudinal and transverse landmarks of the collapsed lung together with the measured depth of the target lesion to estimate the spatial location of the nodule during surgery. Because localization is performed intraoperatively without transcutaneous puncture, the technique has the potential to reduce procedure-related trauma and simplify the clinical workflow.

Preliminary clinical experience suggests that the LLD localization method may provide accurate localization while avoiding several limitations associated with preoperative puncture-based approaches. However, high-quality prospective evidence comparing this technique with current standard localization methods remains limited.

This multicenter randomized controlled trial has been designed to provide rigorous clinical evidence regarding the performance of the LLD localization technique. The study will evaluate whether this novel approach can serve as an effective alternative to conventional CT-guided localization and support broader clinical application in the surgical management of peripheral pulmonary nodules.

Tipo di studio

Interventistico

Iscrizione (Stimato)

274

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

  • Nome: Zhenguo Sun, Doctor of Medicine (MD)
  • Numero di telefono: +86-185-6008-9136
  • Email: sunzg@sdu.edu.cn

Luoghi di studio

    • Guizhou
      • Xingyi, Guizhou, Cina, 562400
        • Xingyi People's Hospital
        • Contatto:
    • Ningxia
      • Yinchuan, Ningxia, Cina, 750021
        • Ningxia Hui Autonomous Region People's Hospital
        • Contatto:
          • Xiaowen Wang, Master of Medicine (M.M.)
          • Numero di telefono: +86-152-0269-2511
          • Email: 506895970@qq.com
    • Shandong
      • Jinan, Shandong, Cina, 250012
        • Qilu Hospital of Shandong University
        • Contatto:
      • Linqing, Shandong, Cina, 252600
        • Linqing People's Hospital
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

  • Clinically diagnosed pulmonary nodule by non-contrast chest CT.
  • Age 18 to 80 years.
  • Expected survival time of at least 12 months.
  • Single peripheral pulmonary nodule with a diameter between 0.8 cm and 2 cm.
  • Chest CT characteristics meeting both of the following criteria:

    1. Solid component proportion ≤50%.
    2. Located subpleurally or in the outer one-third of the lung parenchyma.
  • Willing to undergo VATS-assisted sublobar resection.
  • No contraindications to pulmonary localization procedures or surgery.
  • Able to understand the study and willing to sign written informed consent.

Exclusion Criteria:

  • Use of other localization methods or other surgical procedures.
  • Concurrent participation in another clinical study.
  • Pregnancy.
  • Unwillingness or inability to cooperate with participation in this study for any reason.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Longitude-Latitude-Depth Localization Group
Participants assigned to this arm will undergo intraoperative longitude-latitude-depth (LLD) localization of peripheral pulmonary nodules. The localization method uses anatomical reference lines and preoperative imaging measurements to determine the three-dimensional position of the target nodule during surgery. Following localization, participants will undergo video-assisted thoracoscopic surgery (VATS)-assisted sublobar resection according to standard surgical practice.
The longitude-latitude-depth (LLD) localization method is a novel intraoperative three-dimensional pulmonary nodule localization technique developed for peripheral pulmonary nodules. Based on preoperative computed tomography (CT) imaging, the target lesion is characterized according to its longitudinal position, transverse position, and depth relative to the visceral pleural surface. During surgery, corresponding anatomical landmarks on the collapsed lung are identified, and the projected surface location and lesion depth are used to estimate the three-dimensional position of the target nodule. Localization is performed intraoperatively without preoperative transcutaneous puncture or placement of localization materials. The identified localization point is subsequently used to guide video-assisted thoracoscopic surgery (VATS)-assisted sublobar resection of the target lesion.
Comparatore attivo: CT-Guided Percutaneous Lung Puncture Localization Group
Participants assigned to this arm will undergo preoperative CT-guided percutaneous pulmonary nodule localization according to institutional standard practice. Following localization, participants will undergo video-assisted thoracoscopic surgery (VATS)-assisted sublobar resection according to standard surgical practice.
CT-guided percutaneous lung puncture localization is a preoperative localization procedure performed under computed tomography guidance. A localization device is inserted through the chest wall into the lung parenchyma to mark the location of the target pulmonary nodule before surgery. Following localization, the position of the marker relative to the nodule is confirmed by CT imaging. The localization result is subsequently used to guide video-assisted thoracoscopic surgery (VATS)-assisted sublobar resection.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Localization Accuracy Rate
Lasso di tempo: Intraoperatively on day 0.

Localization accuracy rate is defined as the percentage of participants with successful localization, calculated as (number of successfully localized participants / total number of participants) × 100%. Localization is deemed successful if the actual distance between the localization point and the true nodule center, or its surface projection, is 1 cm or less. A distance exceeding 1 cm is classified as localization failure.

After removal of the pulmonary nodule, measure the distance from the nodule center to the marked localization point with a ruler and record the value.

Intraoperatively on day 0.

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Perioperative Complication Rate
Lasso di tempo: From the initiation of the localization procedure through hospital discharge, up to 14 days post-surgery.
The perioperative complication rate is defined as the proportion of participants experiencing one or more procedure-related or surgery-related complications during the perioperative period. Complications include, but are not limited to, pneumothorax, hemothorax, pulmonary hemorrhage, hemoptysis, prolonged air leak, and other adverse events requiring medical intervention.
From the initiation of the localization procedure through hospital discharge, up to 14 days post-surgery.
Localization Time
Lasso di tempo: During the localization procedure on day 0 (from the start of localization to its confirmed completion, approximately 5-20 minutes).
Localization time is defined as the time required to complete the pulmonary nodule localization procedure. For the LLD group, localization time is measured from initiation of intraoperative localization to successful identification of the localization point. For the CT-guided localization group, localization time is measured from initiation of the CT-guided localization procedure to completion of localization confirmation. The outcome will be reported in minutes.
During the localization procedure on day 0 (from the start of localization to its confirmed completion, approximately 5-20 minutes).
Postoperative Chest Drainage Tube Removal Time
Lasso di tempo: From the completion of surgery to chest drainage tube removal, assessed up to 14 days post-surgery.
Chest drainage tube removal time is defined as the interval between completion of surgery and removal of the postoperative chest drainage tube according to institutional postoperative management criteria. The outcome will be reported in days. A shorter duration indicates faster postoperative recovery.
From the completion of surgery to chest drainage tube removal, assessed up to 14 days post-surgery.
Oxygenation Index
Lasso di tempo: Postoperative day 1 and day 2.
The oxygenation index is calculated as the ratio of arterial oxygen partial pressure (PaO₂) to the fraction of inspired oxygen (FiO₂). Higher values indicate better pulmonary oxygenation function. The outcome will be reported as the PaO₂/FiO₂ ratio measured from arterial blood gas analysis.
Postoperative day 1 and day 2.
Postoperative Length of Hospital Stay
Lasso di tempo: From the completion of surgery to hospital discharge, assessed up to 30 days.
Postoperative length of hospital stay is defined as the number of days from completion of surgery until hospital discharge. The outcome will be reported in days. A shorter hospital stay indicates faster postoperative recovery and resource utilization efficiency.
From the completion of surgery to hospital discharge, assessed up to 30 days.
Postoperative Pain Score (VAS)
Lasso di tempo: Postoperative day 1, day 2, day 3, and day 7.
The Visual Analogue Scale (VAS) is used to assess postoperative pain intensity. Participants rate their pain on a scale ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. Higher scores indicate greater pain severity. The outcome will be reported as the mean VAS score at each assessment time point.
Postoperative day 1, day 2, day 3, and day 7.
Quality of Life Score (EORTC QLQ-C30)
Lasso di tempo: Postoperative month 1, month 3, and month 6.
The European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30) is used to assess health-related quality of life. The questionnaire includes functional scales, symptom scales, and a global health status scale. Scores are transformed to a 0-100 scale according to the EORTC scoring manual. For functional scales and global health status, higher scores indicate better functioning and quality of life. For symptom scales, higher scores indicate greater symptom burden and worse quality of life.
Postoperative month 1, month 3, and month 6.

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Pubblicazioni e link utili

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Pubblicazioni generali

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 luglio 2026

Completamento primario (Stimato)

1 luglio 2028

Completamento dello studio (Stimato)

1 luglio 2028

Date di iscrizione allo studio

Primo inviato

23 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

23 giugno 2026

Primo Inserito (Effettivo)

30 giugno 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

30 giugno 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

23 giugno 2026

Ultimo verificato

1 giugno 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • KYLL-2026-03-003-1

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

To protect participant privacy and maintain clinical data confidentiality, individual participant data will not be made publicly available.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .