Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval increase in retrocardiac airspace opacification may represent atelectasis , aspiration , or early pneumonia , depending upon the clinical setting . Multiple large rounded pulmonary nodules are similar to prior studies from ___ and consistent with patient 's known pulmonary amyloid . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
1 . New retrocardiac airspace opacity may represent early pneumonia , atelectasis , or aspiration , depending upon the clinical setting . 2 . Unchanged extensive pulmonary amyloid .