<prompt> Which of the following structures is not seen on bronchoscopyTracheaVocal cordsSubcarinal lymph nodesFirst segmental division of bronchi  <response>: Bronchoscopy can be done as pa of an endobronchial ultrasound EBUS to look at the lymph nodes and other structures in the area between the lungs. ... If suspicious areas such as enlarged lymph nodes are seen, a hollow needle can be passed through the bronchoscope and guided into these areas to obtain a biopsy. Ref- Dhingra , 6th edition, pg no. 425. 