Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , which limits evaluation . There is minimal right basilar atelectasis . The left upper lobe opacity appears to have nearly completely resolved ; there is possible mild residual scarring or atelectasis . There is no new airspace opacity . There is no pulmonary edema , pleural effusion , or pneumothorax . The mediastinal contours are widened due to the known ectasia and tortuosity of the thoracic aorta . The heart size is enlarged , and unchanged from prior exams .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Unchanged tortuous and ectatic thoracic aorta and cardiomegaly .