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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