Ultrasound has long been used to image thoracic structures, and the use of an ultrasound endoscope allowing visualization of structures surrounding the esophagus was first described in 1980. It was not until the early 1990s that endobronchial ultrasound (EBUS) was developed, but since then EBUS has dramatically changed the practice of bronchoscopy. Before the advent of EBUS, the bronchoscopist's view was limited to those structures he or she could visualize within the airways or with fluoroscopy. With EBUS the bronchoscopist can now visualize the structures in and adjacent to the airway wall using ultrasound. EBUS can be performed using a radial probe (RP-EBUS) or a convex probe (CP-EBUS). This chapter will review the clinical applications of EBUS. A more detailed discussion of the technical aspects of EBUS will be undertaken elsewhere in this text.
ASJC Scopus subject areas