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Planning of segmentectomy using three-dimensional computed tomography angiography with a virtual safety margin:
Shingo Iwano1, Kohei Yokoi2, Tetsuo Taniguchi2
1Nagoya University Graduate School of Medicine, Department of Radiology, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
Lung Cancer (Amsterdam, Netherlands)
|July 11, 2013
Summary
This study introduces a 3D CT angiography technique with a virtual safety margin for lung cancer segmentectomy planning. The method successfully guided segmentectomies, ensuring clear margins and no lymph node metastasis in patients with small primary lung cancers.
Area of Science:
- Thoracic Surgery
- Surgical Oncology
- Medical Imaging
Background:
- Preoperative planning for lung cancer segmentectomy requires precise identification of intersegmental pulmonary veins and safety margins.
- Adequate segmentectomy planning is crucial for effective primary lung cancer treatment.
Purpose of the Study:
- To describe and evaluate a novel preoperative planning technique using 3D CT angiography with a virtual safety margin for lung cancer segmentectomy.
- To assess the efficacy of this technique in guiding segmentectomy procedures for small lung cancers.
Main Methods:
- Retrospective review of clinical, radiological, and pathological records of patients undergoing segmentectomy for primary lung cancer (≤2 cm diameter).
- Preoperative planning utilized 3D CT angiography incorporating a virtual safety margin.
- Segmentectomy was performed based on the results of this planning technique.
Main Results:
- Seventeen primary lung cancers in 16 patients were resected using segmentectomy planned with the new technique.
- Tumor types included adenocarcinomas (non-solid, partly solid, solid) and squamous cell carcinomas.
- Pathological examination confirmed no positive surgical margins and no lymph node metastases in any cases.
Conclusions:
- 3D CT angiography with a virtual safety margin effectively visualizes 3D distances and relationships between tumors and intersegmental veins.
- This technique aids in non-invasive preoperative planning for segmentectomy in patients with small primary lung cancers (≤2 cm).
