Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . This accentuates the size of the cardiac silhouette which appears mildly enlarged . Mediastinal and hilar contours are normal . There is no pulmonary edema . Crowding of the bronchovascular structure is noted as result of the low lung volumes . There is minimal atelectasis at the lung bases . No focal consolidation , pleural effusion or pneumothorax is seen . No acute osseous abnormality is identified .
    OUTPUT:
    
Low lung volumes with mild bibasilar atelectasis .