Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Near complete opacification of the left hemithorax is unchanged compared to the prior exam with leftward shift of mediastinal structures . The right lung is grossly clear . Clips are seen within the right axillary region . There is no pulmonary vascular congestion , right - sided pleural effusion or pneumothorax . No acute osseous abnormalities are detected . Cholecystectomy clips are re - demonstrated in the right upper quadrant of the abdomen .
    OUTPUT:
    
Near - complete opacification of the left hemithorax with leftward shift of mediastinal structures , unchanged , and likely due to a combination of malignancy and collapse . Infection , however , is difficult to exclude . Resolution of previously noted right basilar opacity .