Abstract
Endobronchial ultrasound-guided transbronchial fine needle aspiration (EBUS-TBNA) has been proven to be useful in lung cancer staging, but its application to benign lesions has been less studied. Bronchogenic cyst is a congenital anomaly in the tracheobronchial tree that is usually asymptomatic. Very large cysts may compress the trachea, causing respiratory symptoms. Relief of compression by EBUS-TBNA had been previously reported. Although rare, bronchogenic cyst may complicate with infection; however, accurate sampling is difficult for conventional TBNA due to blind approach. In this clinical setting, EBUS-TBNA provides real-time visualization, which may enable infection survey toward the lesions.
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