Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the chest radiographs obtained ___ , no significant changes are appreciated . Severe cardiomegaly is unchanged and there is no pulmonary vascular congestion or pleural effusions . Lungs are fully expanded and clear without focal consolidation . Cardiomediastinal hilar silhouettes are otherwise unremarkable . Median sternotomy wires are midline and intact . A dual lead pacemaker appears in unchanged position . Cholecystectomy clips project over the right upper quadrant .
    OUTPUT:
    
No radiographic evidence of pneumonia . Unchanged cardiomegaly without evidence of acute decompensation .