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 unremarkable . Crowding of the bronchovascular structures is demonstrated without pulmonary edema . Calcified granuloma within the right lung base is unchanged . Patchy opacities are noted in the lung bases , more so on the left . No pleural effusion or pneumothorax is present . There are no acute osseous abnormalities .
    OUTPUT:
    
Low lung volumes with patchy opacities at the lung bases , likely atelectasis . Infection or aspiration can not be completely excluded .