Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . New patchy opacities have developed in the left retrocardiac region with associated bronchial wall thickening . No pleural effusion .
    OUTPUT:
    
New left lower lobe opacities with adjacent bronchial wall thickening are concerning for a developing pneumonia in this region .