Endoscopic bronchial ultrasound in mediastinal staging of lung cancer

Abstract

Lung cancer is a global healthcare concern with a low 5-year survival rate and a high proportion of advanced-stage cases at diagnosis. In the absence of distant metastasis, the most important prognostic marker is mediastinal lymph node involvement. Timely diagnosis and staging improves prognosis, making rapid, safe, and accurate investigation essential. Endoscopic bronchial ultrasound (EBUS) is a minimally invasive technique which allows for ultrasound-guided transbronchial needle aspiration (TBNA) during bronchoscopy, with cytological sampling of several intrathoracic groups of lymph nodes. EBUS reduces need for open surgical biopsy, with good sensitivity and specificity and excellent safety profile. This article reviews current evidence regarding use of EBUS in lung cancer staging, including its role in other intrathoracic malignancies.eviews current evidence regarding use of EBUS in lung cancer staging, including its role in other intrathoracic malignancies.