Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable supine chest radiograph is provided . Lung volumes are low . There is a small left pleural effusion , new since most recent prior study . There is mild prominence of the pulmonary interstitium which is likely due to pulmonary edema . There is no pneumothorax . The cardiomediastinal silhouette is notable for a tortuous and calcified aorta and mitral annular calcifications . The bones are mildly osteopenic . The imaged upper abdomen is unremarkable . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
1 . New small left pleural effusion compared to the most recent prior study . 2 . New mild pulmonary edema .