Diagrammatic representation of diagnostic performance characteristics of endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in an isolated mediastinal and/or hilar lymphadenopathy (IMHL) population. Diagrammatic representation of diagnostic performance characteristics of endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in an isolated mediastinal and/or hilar lymphadenopathy (IMHL) population. Matthew Evison et al. BMJ Open Resp Res 2014;1:e000040 ©2014 by British Thoracic Society