Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Reticular opacities at the lung bases bilaterally likely represent mild atelectasis . There is mild biapical pleural - parenchymal scarring . No evidence of pneumonia , pleural effusion , or pneumothorax . Heart size and mediastinal contours are within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .