Utility of Hyperechoic Interface Echo and Aberrant Vessels for Differentiation Between Sarcoidosis and Metastatic Lymph Nodes on Endobronchial Ultrasonography

Abstract

PURPOSE: Endobronchial Ultrasonography guided Transbronchial Needle Aspiration (EBUS-TBNA) for mediastinal and hilar lymph nodes has been used in many countries. However internal structures of mediastinal and hilar lymph nodes by the convex bronchoscope were not discussed in detail. We could observe hyperechoic interface echo of the lymph node by B mode and aberrant vessels in the lymph node by power Doppler mode. The aim of this study was to further evaluate the diagnostic yield of hyperechoic interface echo and aberrant vessels for differentiation between sarcoidosis and metastatic lymph nodes.