Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are compared to previous exam from ___ . Again low lung volumes are seen . There is blunting of the posterior costophrenic angles suggestive of small effusions . There is also bibasilar atelectasis . Superiorly the lungs are clear without significant pulmonary vascular redistribution . Cardiomediastinal silhouette is unchanged . Median sternotomy wires and mediastinal clips again noted . Surgical clips in the right upper quadrant suggest prior cholecystectomy . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Low lung volumes . Probable small bilateral pleural effusions and bibasilar atelectasis although a component of infection should be excluded clinically .