Abnormal Transradiancy of One Lung

Abstract

This paper describes a disease pattern with a distinctive clinico-radiological picture but of an undetermined pathology. The main features are quietening of the breath sounds and lessening of the radiographic lung markings with persistently greater transradiancy over one lung, the condition being distinguishable from simple unilateral obstructive emphysema by the small or normal size of the affected lung and the absence of evidence of bronchial obstruction. Bronchoscopy reveals no abnormality of the major bronchi, and broncho-graphy shows the contrast oil flowing freely into an almost normal bronchial tree. These observations are based on a study of nine well-developed cases. None of these showed TABLE