Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post right pneumonectomy with complete opacification of the right hemithorax seen . The left hemithorax demonstrates perihilar opacity , raising concern for pulmonary edema . The patient 's known left lower lobe pulmonary nodule is better evaluated on CT . No large left pleural effusion is seen . There is no evidence of pneumothorax .
    OUTPUT:
    
1 . No evidence of pneumothorax . 2 . Pulmonary edema . 3 . Known left lower lobe nodule , better appreciated on CT . 4 . Status post right pneumonectomy .