atelectasis

(redirected from round atelectasis)
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atelectasis

[‚ad·əl′ek·stə·səs]
(medicine)
Total or partial collapsed state of the lung.
Failure of the lung to expand at birth.
References in periodicals archive ?
(42-47) Patients with round atelectasis are predominantly men (>90%) and are often smokers, with a mean age of 60 years (range, 20 to 83 years).
Two main theories for the formation of round atelectasis have been proposed.
On plain chest radiograph, round atelectasis is described as a rounded mass, 2.5 to 5 cm in dimension, although lesions up to 10 cm have been reported.