The size and characteristics of the mediastinal lymph nodes as visualised during EBUS/EUS will be recorded. The concerned mediastinal lymph nodes will be sampled by EBUS-TBNA/EUS-FNA under direct ultrasonic visualisation. The aspirates will be expressed on to slides and will be placed into alcohol cytology bottles. The slides will then be dispatched to the Cytopathology Lab for appropriate stains and further analysis. Lymph node core if obtained will be sent in formalin for Histopathological analysis. Post procedure, the patients will remain in observation for a few hours and will be discharged on the same day. A patient proforma will be completed for each patient separately. The size and stations of the sampled nodes will be recorded. The total duration of procedure, the nature and total dose of anaesthesia or sedation will also be recorded. A Visual-analogue scale (VAS) will be used to assess operator rated procedure related cough and overall operator rated procedure satisfaction.