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Evaluation of the air bronchogram sign on CT in solitary pulmonary lesions.
J Comput Assist Tomogr
December 1996
Department of Radiology, University of Maryland Medical System, Baltimore 21201, USA.
Purpose: Our goal was to evaluate the presence and the significance of the air bronchogram sign in solitary pulmonary lesions (SPL) on CT.
Method: One hundred thirty-two patients with SPL who underwent chest CT scans and had histological diagnosis were studied retrospectively. We reviewed all chest CT scans to assess for the presence of the air bronchogram sign in the SPL and recorded the distribution of this sign in malignant and benign lesions.
Studies on the pulmonary respiration function in lung cancer patients by roentgenopneumopolygraphy allowed determining some reduction in the level of the lung parenchyma ventilatory activity on average up to 0.20 +/- 0.02 unit of optic density.
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