Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vascularity is not engorged . Ill - defined patchy opacity within the left lower lobe is concerning for an area of developing infection . Minimal streaky opacity in the right lung base may also reflect an infectious process or atelectasis . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities are detected .
    OUTPUT:
    
Ill - defined opacity in the left lower lobe is concerning for an area of developing infection . Streaky opacity in the right lung base is nonspecific and may reflect an area of atelectasis or additional area of infection .