Lung Point Sign in Ultrasound Diagnostics of Pneumothorax: Imitations and Variants

Figure 3

Physiological lung point sign with the pericardium adjacent to the fascia endothoracica. (a) B-mode, linear probe. The vertical arrow indicates the physiological lung point. The upper horizontal arrow shows the fascia endothoracica, and the arrow below points to the pericardium with a thin layer of mediastinal tissue between them. (b) M-mode, linear probe. The arrow indicates the physiological lung point. A video loop is available as Supplementary File 3.

(a)

(b)