Fiducial Marker Placement Via Convex Probe EBUS

Area of Science:

• Oncology
• Pulmonology
• Radiotherapy

Background:

• Low-dose computed tomography (LDCT) screening increases early-stage lung cancer detection.
• An aging population and rising comorbidities necessitate advanced, nonsurgical treatment options.
• Stereotactic body radiotherapy (SBRT) is a key nonsurgical treatment for lung malignancies.

Purpose of the Study:

• To describe a novel method for fiducial marker placement in central lung tumors.
• To ensure accurate tumor localization for definitive radiotherapy.
• To support the use of SBRT in treating lung cancer.

Main Methods:

• Utilized convex probe endobronchial ultrasound (EBUS) for identifying mediastinal and hilar lymph nodes and central lung tumors.
• Adapted a transbronchial needle aspiration (TBNA) technique.
• Developed a modified TBNA for precise fiducial marker placement in isolated central tumors.

Main Results:

• Successfully demonstrated a method for fiducial marker placement in central lung tumors.
• The described technique ensures appropriate localization for radiotherapy.
• Facilitates minimally invasive treatment planning for lung cancer.

Conclusions:

• The modified TBNA technique enables precise fiducial marker placement for SBRT.
• This method is vital for treating central lung tumors, especially in patients unsuitable for surgery.
• Enhances the efficacy of radiotherapy for early-stage lung cancer identified by LDCT screening.