Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is within normal limits . Patchy ill - defined nodular opacities are seen within the left perihilar region . The right lung is clear . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are present .
    OUTPUT:
    
Ill - defined nodular opacities in the left perihilar region are suspicious for early infection .