Pulmonary Nodules
Conditions
Interventions
CT-guided localization group:None
Venous watershed analysis group:None
Arterial watershed analysis group:None
Sponsors
The affiliated people's hospital of Ningbo University
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1. Patients who underwent pulmonary wedge resection at Ningbo University Affiliated People's Hospital between May 1, 2023, and December 1, 2025, and were preoperatively suspected of having non-palpable lung nodules (intraoperatively unlocatable by palpation); 2. Nodule diameter of 8-20 mm, with imaging indicating location in the peripheral one-third of the lung field; 3. Preoperative chest CT showing a ground-glass opacity (GGO) component >=50% in the nodule, or preoperative biopsy pathology confirming preinvasive lesions (such as atypical adenomatous hyperplasia or adenocarcinoma in situ); 4. Preoperative high-quality chest CT examination performed (1 mm slice thickness, end-inspiratory breath-hold scan), sufficient for three-dimensional reconstruction; 5. Complete medical records including preoperative examination reports, operative notes, postoperative nursing records, and pathological reports, with no critical data missing.
Exclusion criteria
Exclusion criteria: 1. History of severe underlying lung disease, including pneumoconiosis, active pulmonary tuberculosis, chronic obstructive pulmonary disease (COPD, pulmonary function class >= II), pulmonary fibrosis, etc.; 2. Allergy to iodine contrast agent or indocyanine green (ICG), or a history of severe drug allergy; 3. Patients requiring segmentectomy or lobectomy due to nodule characteristics (e.g., suspected invasive carcinoma with diameter >20 mm) or location (e.g., near the hilum); 4. History of previous ipsilateral lung surgery (e.g., lobectomy or segmentectomy), or conditions such as pleural adhesions or thoracic deformity that impair surgical procedure; 5. Patients with severe concomitant dysfunction of vital organs (heart, liver, kidney) or coagulation disorders rendering them unfit for surgery; 6. Incomplete medical records, such as missing documentation of localization time, complications, or pathological results.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Success rate of localization;Total hospitalization costs; | — |
Secondary
| Measure | Time frame |
|---|---|
| Length of hospital stay;Localization-associated complications;Localization procedure time;Total postoperative drainage volume;Final pathological diagnosis;Chest tube indwelling times; | — |
Countries
China
Contacts
Public ContactHuang Wei
The affiliated people's hospital of Ningbo University
Outcome results
None listed