[Developmental defects of the lungs and their clinical significance]

On the basis of a complex bronchological examination and treatment of 277 cases of 293 various bronchopulmonary malformations, the differential diagnostic features of the most common lung malformations are listed. These malformations: cystic and ordinary hypoplasia, sequestration, tracheal bronchus etc.-are of a special clinical significance for surgeons. Immediate and late results of surgical treatment of 107 patients (38.8%) were studied. They prove a good effect of early operations on patients suffering from lung malformations, while inoperated patients not infrequently develop various complications, such as pulmonary hypertension, secondary bronchiectasis and so on.