Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is moderate to severely enlarged . No overt pulmonary edema is seen . There is no pleural effusion or pneumothorax . No focal consolidation is seen . Mediastinal contours unremarkable . Degenerative changes are incidentally noted at bilateral acromioclavicular and glenohumeral joints .
    OUTPUT:
    
Marked enlargement of the cardiac silhouette . No focal consolidation .