A Nomogram to Predict Benign/Malignant Mediastinal Lymph Nodes Based on EBUS Sonographic Features

Table 2

Ultrasound image features of all lymph nodes.

Characteristics	Overall (n = 1082)
Long-axis (median [IQR])	2.00 [1.50, 2.77]
Short-axis
>1 cm	882 (81.5%)
≤1 cm	200 (18.5%)
Long-axis/short-axis ratio
≥1.5	229 (21.2%)
<1.5	853 (78.8%)
Number of passes per node (median [IQR])	3.0 [2.0, 3.0]
Echo intensity
Hyperechoic	32 (3.0%)
Hypoechoic	1041 (96.2%)
Isoechoic	9 (0.8%)
Echogenicity
Heterogeneous	671 (62%)
Homogeneous	411 (38%)
Margin
Indistinct	866 (80%)
Distinct	216 (20%)
Blood flow
Rich	890 (82.3%)
Lacking	192 (17.7%)
Fusion
Absent	822 (76.0%)
Present	260 (24.0%)
Central hilar structure
Absent	740 (68.4%)
Present	342 (31.6%)