Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No evidence of pneumonia . Stable cardiomegaly with stable mild pulmonary edema . There is a small pleural effusion . Otherwise , lung fields are unremarkable with no areas of focal consolidation or evidence of pneumothorax . The pleural surfaces are within normal limits . Sternotomy wires are again seen . Note is made of multilevel degenerative changes seen along the thoracic spine .
    OUTPUT:
    
Small pleural effusion . Stable pulmonary edema . No clear evidence of pneumonia .