Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 2 views were obtained of the chest . The lungs are somewhat low in volume with linear left basilar opacities , most likely atelectasis . There is no pleural effusion or pneumothorax . The heart is top normal in size and intervally increased over the prior two days which may reflect pericardial effusion . Mediastinal and hilar contours are normal .
    OUTPUT:
    
Linear left basal opacities most likely atelectasis . Interval increase in size of cardiac silhouette over the past few days could reflect pericardial effusion . Findings discussed with Dr . ___ by Dr . ___ by phone at ___ on ___ .