Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta is tortuous , unchanged . Mediastinal and hilar contours are similar . There is no pulmonary edema . Small left pleural effusion is slightly decreased in size . No focal consolidation or pneumothorax is seen . Eventration of the right hemidiaphragm is re - demonstrated . Minimal atelectasis is noted in both lung bases . There are no acute osseous abnormalities .
    OUTPUT:
    
Slight decrease in size of small left pleural effusion and mild bibasilar atelectasis .