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  Indian J Med Microbiol
 

Figure 3: This M-mode image demonstrates an alternating pattern of absent lung sliding with normal lung sliding. This occurs at the boundary of the pneumothorax where during inspiration the lung is seen to slide transiently (arrow) and during expiration lung sliding is abolished (arrowhead) This phenomenon, known as the “lung point,” confi rms the presence of pneumothorax

Figure 3: This M-mode image demonstrates an alternating pattern of absent lung sliding with normal lung sliding. This occurs at the boundary of the pneumothorax where during inspiration the lung is seen to slide transiently (arrow) and during expiration lung sliding is abolished (arrowhead) This phenomenon, known as the “lung point,” confi rms the presence of pneumothorax