Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Azygos lobe is incidentally noted . Subtle left lower lobe opacity seen on the frontal view , not well seen on the lateral view , could be due to atelectasis or pneumonia . No focal consolidation is seen on the right . There is no pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are unremarkable . No pulmonary edema is seen . Cervical surgical hardware is incidentally noted but not well assessed .
    OUTPUT:
    
Streaky left base opacity could be due to atelectasis or pneumonia .