Infected bronchogenic cyst diagnosed by endobronchial ultrasound-guided transbronchial needle aspiration

摘要

Endobronchial ultrasound-guided transbronchial fine nee- dle aspiration (EBUS-TBNA) has been proven to be useful in lung cancer staging, 1e3 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. 4 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.