Monday, May 24, 2010

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X ray pneumothorax

X ray findings of pneumothorax include a discrete shadowed line beyond which no lung markings are present, as shown by the arrows. They usually occur at the apices which are the least dependent part of the lungs on erect posture. Inspiratory and expiratory films may aid in detection. In expiration, lung volume is decreased while that of the pneumothorax is constant. So there will be a relative increase in the size of the pneumothorax.

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