Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacification of the left hemithorax with leftward shift of mediastinal structures and apparent surgical material in the left hilar region suggests prior pneumonectomy . A left - sided PICC is demonstrated with tip likely in the region of the mid SVC . The right lung appears hyperinflated but clear . No pulmonary edema is present . There is no pneumothorax or pleural effusion on the right . No acute osseous abnormalities detected .
    OUTPUT:
    
Opacification of the left hemothorax likely due to prior pneumonectomy . Correlation with clinical history is recommended as well as previous imaging exams .