Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . There is redemonstration of plate - like atelectasis at the left and right lung bases , not significantly changed since at least ___ . Given persistence of linear densities , scar formation can be considered . There is no new focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
Stable areas of plate - like atelectasis in lower lungs . Given chronicity of findings consider scar formation . No evidence of acute consolidations .