Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is essentially unchanged from the prior examination . There is no appreciable pleural effusion , pulmonary edema , consolidation , or pneumothorax identified . The cardiomediastinal silhouette is otherwise within normal limits . Degenerative changes are noted within the visualized thoracic spine .
    OUTPUT:
    
Stable cardiomegaly without overt pulmonary edema or pleural effusion .