How is sequential TBNA performed during endobronchial ultrasound (EBUS)?

Updated: Apr 24, 2019
  • Author: Narayan Neupane, MD; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Sequential TBNA is defined as the localization of a lesion, followed by sampling of the lesion. When the target lesion is identified, the radial probe is removed from the working channel of the bronchoscope, and the TBNA needle is introduced. Sequential TBNA can also be used to localize and sample intraparenchymal lesions. The probe should be introduced using a catheter with an extended working channel and placed precisely on the lesion. With the guide sheath in position, the radial probe is removed and a biopsy forceps or brush is used to sample the lesion through the guide sheath. It can also be combined with a virtual bronchoscopic navigation system. [30]

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