Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear opacities at the lung bases bilaterally likely reflect atelectasis . No focal consolidations to suggest pneumonia . No evidence of pulmonary edema . Stable enlargement of the cardiomediastinal silhouette . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Cardiomegaly , but no evidence of pulmonary edema . 2 . Bibasilar atelectasis .