Fig. 3From: Factors leading to failure to diagnose pulmonary malignant tumors using endobronchial ultrasound with guide sheath within the target lesionComputed tomography, endobronchial ultrasound and histopathological findings. Case 3 (a, b, c): tumor with fibrotic and granulomatous tissue. Case 4 (d, e, f): tumor with areas of fibrosis and necrosis. Case 5 (g, h, i): tissue sampling by transbronchial biopsy with tissue showing atypical cells. Case 6 (j, k, l): tumor with central necrosis. EBUS, endobronchial ultrasound; CTNB, CT-guided needle biopsyBack to article page