Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Opacification of the right mid to lower lung is concerning for pneumonia and effusion . Mild left basal atelectasis noted . No pneumothorax . Heart size can not be assessed due to effacement of the right heart border . Mediastinal contour appears normal . Mild hilar congestion difficult to exclude . No acute bony abnormalities .
    OUTPUT:
    
Opacity in the right lower lung is concerning for pneumonia and effusion . Mild hilar congestion likely also present .