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. 1989 Nov;173(2):447-9.
doi: 10.1148/radiology.173.2.2798876.

Torsion of the upper lobe in pneumothorax

Y M Berkmen  1 , D Yankelevitz, S D Davis, P Zanzonico
Affiliations

Torsion of the upper lobe in pneumothorax

Y M Berkmen et al. Radiology. 1989 Nov.

Abstract

A rounded density is occasionally seen hanging down from the hilus in the presence of a large pneumothorax. To find an explanation for this appearance, the authors obtained a right-sided bronchogram on a baboon, after which they induced pneumothorax on the same side. This experiment demonstrated that the rounded density is formed by a twisted and atelectatic upper lobe.

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