Patient Preparation: The patient may be sedated or under general anesthesia. Bronchoscopy: A bronchoscope is inserted through the mouth or nose into the trachea and bronchi. Ultrasound Imaging: The ultrasound probe is used to visualize the target area. Tissue Sampling: Fine-needle aspiration (FNA) is performed to collect tissue samples. Sample Processing: The collected samples are fixed, embedded in paraffin, sectioned, and stained for histological examination.
