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

Figure 2

Physiological lung point. (a) B-mode, linear probe. The vertical arrow shows the physiological lung point. To the left of the vertical arrow, the upper horizontal arrow indicates pleural sliding, and to the right, the opposite horizontal arrow shows fascia endothoracica without pleural sliding. The lower horizontal left arrow indicates mediastinal pleura at the edge of the lung, and the lower horizontal right arrow points to the pericardium. The asterisks show mediastinal tissue. (b) M-mode, linear probe. The vertical arrow shows the physiological lung point. A video loop is available as Supplementary File 2.

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