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Figure 2: Representative cases of EBUS-TBNA in distinguishing malignant from benign lesions. Chest CT demonstrates RLL masses diagnosed as lung adenocarcinoma (a), inflammation (d), tuberculosis (g). EBUS images of targets (b, e, h, respectively). TBNA tissue specimen revealed lung adenocarcinoma (c, ×20 ). Necrosis with inflammatory exudation (f, ×20) found in TBNA tissue. epithelioid granuloma with caseous necrosis ( i, ×20 ) together with positive acid-fast staining found in TBNA tissue. RLL, right lower lobe

Figure 2: Representative cases of EBUS-TBNA in distinguishing malignant from benign lesions. Chest CT demonstrates RLL masses diagnosed as lung adenocarcinoma (a), inflammation (d), tuberculosis (g). EBUS images of targets (b, e, h, respectively). TBNA tissue specimen revealed lung adenocarcinoma (c, ×20 ). Necrosis with inflammatory exudation (f, ×20) found in TBNA tissue. epithelioid granuloma with caseous necrosis ( i, ×20 ) together with positive acid-fast staining found in TBNA tissue. RLL, right lower lobe