Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs again demonstrate left lateral chest wall postsurgical changes . The left pneumothorax is not well appreciated on frontal view , but the straight interface of fluid on lateral view suggests the presence of air in the pleural cavity . The left pleural effusion is increased . There is decreased left base atelectasis . The cardiomediastinal silhouette is normal and lungs are without focal consolidation .
    OUTPUT:
    
1 . Although the left pneumothorax is not well appreciated on frontal view , the straight interface of fluid on lateral view suggests the presence of air in the pleural cavity . 2 . Increased left pleural effusion . 3 . Decreased left base atelectasis .