A 21-year-old woman presented with productive cough and hemoptysis. Chest radiograph shows a large thin-walledcystic lesion with an air-fluid level in medial portion of the left lower lung zone and opacity in paravertebralarea of the right lower lung zone. Chest CT scan shows a thin-walled cavitary lesion in the posterior basalsegment of left lower lobe with an air-fluid level. Area of consolidation containing air-filled cysts was alsoobserved in medial aspect of right lower lobe. Selective angiogram obtained from aberrant artery arising fromdescending abdominal aorta shows two main branches of the artery supplying bilateral pulmonary lesions.