Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . Small right pleural effusion is noted . No left pleural effusion . Mild cardiomegaly has decreased since prior examination . Mediastinal contour and hila are unremarkable . Aortic arch calcifications are again noted . There are intact median sternotomy wires with clips in the left hilum as well as a partially visualized left upper extremity vascular stent .
    OUTPUT:
    
1 . Small right pleural effusion with improved mild cardiomegaly . 2 . No pulmonary edema .