Neonatal chylothorax and ultrasound: Diagnosis, measurements, and correlations with management

Figure 1 Illustration of the ultrasound measurements. The lung-chest wall distance (line A) and the lung-diaphragm distance (line B) are measured in centimeters to determine the derived area (orange rectangle) as a geometric approximation.

Figure 2 Receiver operating characteristic curves for lung-chest wall distance, lung-diaphragm distance, and derived area. Area under the curve (AUC) of 0.984 (95%CI: 0.954-1.000) for the derived area, 0.938 (95%CI: 0.869-1.000) for the lung-diaphragm distance, and 0.917 (95%CI: 0.810-1.000) for the lung-chest wall distance.

Figure 3  Hypothetical algorithm for future prospective testing.