A 39-year-old man presented to another hospital with a one-week history of left back pain. He was referred to this hospital because of the abnormal chest computed tomography (CT) findings. He had a history of left pneumothorax which had been treated surgically. Chest contrast-enhanced CT revealed a cystic lesion in the left hilar region, a wedge-shaped mass adjacent to the aorta and vertebra, and localized emphysematous change in the left lower lobe of the lung. Based on surgical and histopathological findings, the diagnosis of bronchogenic cyst, extralobar pulmonary sequestration, and bronchial atresia was made.
Because it is not plausible that three congenital lung malformations developed simultaneously by chance, they might have been caused by a single event in the developmental process. Thus, this case could give insights into the etiology of congenital lung malformations.