Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest shows unchanged position of the right subclavian catheter in the mid SVC . Compared to the prior radiograph , there is mild decrease in lung volumes . There is increase in opacification of the right and left lower lung zones , concerning for developing pneumonia . The cardiac and mediastinal contour is normal . No pleural effusion or pneumothorax is appreciated .
    OUTPUT:
    
Increase in focal opacity at the right and left lung bases concerning for developing pneumonia .