[Bronchogenic cysts. A clinical and regional lung function study before and after surgery (author's transl)].

Studies of regional lung function were performed on two children with bronchogenic cysts before and after surgery. The first patients, aged two, presented with a severe and continuous airflow obstruction leading to significant disturbance of perfusion per unit of alveolar volume; the abnormalities of perfusion were partly reversible when the ventilation was restored after surgery. Patient no 2, aged 10 years, had a voluminous peripheral cyst, which was shown to be ventilated by pulmonary function studies and further confirmed by bronchography. After lobectomy, studies revealed a reduction in the functional pulmonary parenchyma in the right hemithorax. The abnormal distribution of perfusion was still seen two years after the operation.