Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . The cardiac silhouette size is borderline enlarged . However this is likely accentuated due to low lung volumes . The mediastinal contour is relatively similar compared to the previous exam . There is mild cephalization of the pulmonary vascular markings due to supine positioning , but no pulmonary edema is seen . Patchy opacities in the lung bases most likely reflect atelectasis . Blunting of the costophrenic sulci bilaterally is chronic , and appears to relate to chronic pleural thickening . No pneumothorax is identified . There are no acute osseous abnormalities detected . Excreted contrast from recent CT scan is noted within the right collecting system .
    OUTPUT:
    
Low lung volumes with bibasilar atelectasis . Chronic bilateral pleural thickening .