Endobronchial Ultrasonography (EBUS) is an advanced medical imaging technique that combines bronchoscopy and ultrasonography. Through a mini-ultrasound probe integrated at the tip of a bronchoscope, it enables real-time visualization of the inner surface of the airways, as well as adjacent structures such as lymph nodes, masses, and blood vessels behind the bronchial wall. EBUS allows for detailed evaluation and biopsy of deep tissues and lesions, including mediastinal regions between the lungs and the heart, which are inaccessible with standard bronchoscopy. Using a specialized EBUS needle, precise and targeted tissue samples (biopsies) can be taken from enlarged lymph nodes or lesions adjacent to the bronchi (e.g., tumors), which is crucial for accurate diagnosis and treatment planning.