[Atelectatic pseudo-tumours of the lung (round atelectases)].

Following the publication of the paper by Hanke, a round atelectasis was diagnosed on six occasions in five of our patients (two radiologically and pathologically, four radiologically only). On the basis of this material, the radiological features of round atelectases are discussed. Hanke's findings are critically reviewed and a comparison with our material shows a number of differences. The term "atelectatic pseudotumour of the lung" is suggested.