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Table 2 Factors associated with diagnostic failure

From: Factors leading to failure to diagnose pulmonary malignant tumors using endobronchial ultrasound with guide sheath within the target lesion

Cases Bronchi EBUS-i Diagnosis Technical factors Pathological factors
1 LtB1 + 2a IIa WDadeno Bending and difficult stabilization of guide sheath Tumor with central necrosis
2 RtB6c IIb MD adeno Bending and difficult stabilization of guide sheath Homogeneous distribution of tumor cells
3 RtB1bii IIIa MD adeno No difficulty Heterogeneous tissue. Tumor cells in granulomatous and fibrotic tissue
4 LtB3ci IIIa MD adeno Bending of guide sheath Tumor central necrosis
5 RtB10bii IIIa WD adeno Bending and difficult stabilization of guide sheath Tumor cells with predominant distribution in central areas
6 RtB4aiβ IIIb PD SCC No difficulty Tumor with central necrosis
7 RtB2bii IIIa WDadeno No difficulty Tumor with central necrosis
8 LtB8biiα IIIb DLBCL Difficult stabilization of guide sheath Homogeneous distribution of tumor cells
  1. EBUS-1 endobronchial ultrasound image, LtB left bronchus, RtB right bronchus, adeno adenocarcinoma, SCC squamous cell carcinoma, WD well-differentiated, MD moderately differentiated, PD poorly differentiated, DLBCL diffuse large B cell lymphoma