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Chest, Vol 95, 836-841, Copyright © 1989 by American College of Chest Physicians

ARTICLES

Rounded atelectasis. Clinical experience with 74 patients

G Hillerdal
Department of Lung Medicine, Akademiska Sjukhuset, Uppsala, Sweden.

Rounded atelectasis is an atelectasis of a peripheral part of the lung due to pleural adhesions and fibrosis causing deformation of the lung and bending of some small bronchi. From 1970 to 1986, some 74 patients with rounded atelectasis have been seen at the Lung Department. Sixty- four of these patients had been exposed to asbestos. The lesion was secondary to a benign asbestos pleurisy in nine patients and resulted from a slowly increasing pleural fibrosis in 13 patients; in the remaining 39 patients with exposure to asbestos, rounded atelectasis was a sudden finding, with earlier roentgenograms showing only plaques or being normal. Three patients had bilateral lesions, and one had no fewer than three small rounded atelectases. All of the asbestos-exposed patients were men. Ten patients (four women and six men) had not been exposed to asbestos. Two of these cases occurred after trauma and four after a pleural exudate. One of the latter was the only one which disappeared spontaneously. The lingula was affected in 33 cases, the middle lobe in 16, the right lower lobe in 12, the left lower lobe in 11, the right upper lobe in six, and the left upper lobe (except the lingula) in one. Nine patients underwent surgery. Operation should be avoided; the typical roentgenologic and CT findings combined with negative results of bronchoscopy (and, in some cases, fine-needle biopsy) will suffice to exclude malignancy.


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