Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Abnormal left perihilar opacification appears unchanged since the scout view from the recent prior CT . The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The chest appears hyperinflated . Streaky and heterogeneous opacities in the left upper lobe appear unchanged . Vague opacification of the lingula also appears unchanged .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease . Stable left hilar and pulmonary abnormalities .