Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are slightly improved . No focal consolidation . No pulmonary edema . Stable moderate to severe cardiomegaly . The mediastinal and hilar contours are stable . Slight improvement of right pleural effusion but worsening of a small left pleural effusion . Median sternotomy wires are stable . Mild thoracolumbar scoliosis .
    OUTPUT:
    
Slight worsening of a small left pleural effusion . No pulmonary edema .