Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . Heterogeneous area of opacity in the left lower lobe can either represent asymmetric pulmonary edema or early pneumonia . There is asymmetric right greater than left pulmonary fibrosis with traction bronchiectasis , predominantly in the right upper lobe . Trace , if any , bilateral pleural effusions . Opacities at the bilateral lung with tenting of the bilateral hemidiaphragms suggest mild atelectasis . No pneumothorax . Mild tortuosity of the thoracic aorta . Otherwise , mediastinal hilar contours are normal . Heart size is normal .
    OUTPUT:
    
1 . Heterogeneous area of opacity in the left lower lobe can either represent asymmetric pulmonary edema or early pneumonia . If possible , old radiographs should be obtained and uploaded to PACS for comparison . 2 . Asymmetric right greater than left pulmonary fibrosis with traction bronchiectasis , predominantly in the right upper lobe . 3 . Trace bilateral pleural effusions . 4 . Mild bibasilar atelectasis .