RAMON ORRIOLS, M.D.
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To the editor: In pneumothorax the air initially accumulates in the highest part of the thoracic cavity, the apex, causing an early collapse of the upper lobe. When more air enters the pleural space, lung lobes collapse, further uniformly maintaining their natural shape at all stages. Physical findings depend largely on the volume of the pneumothorax. Sometimes, however, physical findings are absent when the pneumothorax is small (1).
We have seen an early sensitive sign, which we do not believe has been reported previously. This is an undue resonance obtained by digital percussion on the medial zone of the clavicle
ORRIOLS R. A New Physical Sign in Pneumothorax. Ann Intern Med. 1987;107:254. doi: 10.7326/0003-4819-107-2-254_1
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Published: Ann Intern Med. 1987;107(2):254.
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