Torsion of the upper lobe in pneumothorax.
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.
Berkmen
Y M
YM
Department of Radiology, New York Hospital-Cornell Medical Center, NY 10021.
Yankelevitz
D
D
Davis
S D
SD
Zanzonico
P
P
D000818:Animals; D005260:Female; D008168:Lung / Q000000981:diagnostic imaging; D008171:Lung Diseases / Q000000981:diagnostic imaging* / Q000209:etiology; D010215:Papio; D011030:Pneumothorax / Q000150:complications* / Q000000981:diagnostic imaging; D013902:Radiography, Thoracic; D014102:Torsion Abnormality / Q000000981:diagnostic imaging / Q000209:etiology