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Internal Medicine

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Lung Sliding

Pleural line is found below the chest wall

Movement of pleura with breathing will generate the “lung sliding” sign

• Represents the sliding of the visceral pleura against the parietal pleura

• Using Color Flow (CF) can help identify the pleural line and its movement

• Best seen near the lung bases

• Can be absent in pneumothorax, atelectasis, pleurodesis, parietal emphysema or any cause that interrupts the normal pleural movement

• Lung sliding can sometimes be better evaluated with the M Mode generating the “Sea Shore” sign

• The presence of lung sliding and the sea shore sign, mostly rules out pneumothorax


M I
Mazen Kherallah
O T
N G
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