Endobronchial ultrasound (EBUS) is a minimally invasive but highly effective procedure used to diagnose lung cancer, infections, and other diseases causing enlarged lymph nodes in the chest.
It is done by specialised bronchoscope with ultrasound transducer on its tip or on probe. In TBNA needle is passed real time into the lymph node to obtain the sample for accurate diagnosis.
Eg Tuberculosis, Sarcoid, Cancer.