Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No focal consolidation , frank pulmonary edema , pleural effusion , or pneumothorax . Heart size is mildly enlarged , slightly more than the prior exam . Mild degenerative changes are noted in the visualized thoracic spine .
    OUTPUT:
    
Mild cardiomegaly without evidence of decompensation .