Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes . Multiple healing right - sided rib fractures are redemonstrated , with increased callus formation . No pneumothorax is seen . Minimal pleural thickening persists . Small pleural effusion seen on ___ exam , has decreased in size , which is now minimal . There is no left pleural effusion . The hilar and mediastinal silhouettes are unchanged . Heart size is normal . There is no pulmonary edema . Imaged upper abdomen is unremarkable . An ill - defined 1 .5 - cm opacity in the left lung base may present summation of shadows .
    OUTPUT:
    
1 . Multiple healing right - sided rib fractures . Small pleural effusion and or pleural thickening seen on ___ exam has decreased , now minimal in size . 2 . A 1 .5 cm left lung base opacity may represent summation of shadows , which can be further assessed with PA radiograph to exclude an underlying lesion . 2 . Small 1 .5 - cm opacity in the left lung base .