Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Mild left basilar atelectasis is noted . The heart is top normal in size . No signs of pneumonia or CHF . Ossific density at the lung apices likely represents calcified scar . Bony structures are intact .
    OUTPUT:
    
Mild left basal atelectasis and top normal heart size . Otherwise , normal .