Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The heart is of top normal size with unremarkable cardiomediastinal contours . There is left lung base scarring , better seen on the same - day chest CT . The lungs are otherwise clear without focal or diffuse abnormality . No pleural effusion or pneumothorax . The osseous structures are unremarkable . No radiopaque foreign bodies .
    OUTPUT:
    
No acute cardiopulmonary process .