Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear except for a small focus of linear opacification at the left lung base adjacent to a calcified granuloma . There is no pulmonary edema . The heart is normal in size , and the mediastinal contours are normal . Prior left rib fractures are noted .
    OUTPUT:
    
No acute cardiopulmonary process .