Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Available for comparison is a preceding chest examination dated ___ . As before , there is moderate cardiomegaly with a configuration indicative of left ventricular enlargement . Thoracic aorta is mildly widened and elongated and shows calcium deposits in the wall , mostly at the level of the arch . There is , however , no evidence of local aortic contour abnormalities . The pulmonary vasculature is not congested . There is now a parenchymal infiltrate on the right lung base and the lateral view confirms this finding in the form of some hazy parenchymal densities and a peripheral plate atelectasis in the right lower lobe posterior segment . No other acute abnormalities are seen ; however , the lung bases have a generally hyperinflated appearance suggestive of COPD . When comparison is made with the preceding chest examination obtained ___ years ago , the moderate cardiac enlargement existed already at that time . There existed also a few for pneumonia suspicious infiltrates on the right base , but they have changed their appearance to some degree .
    OUTPUT:
    
Pneumonic infiltrate in right lower lobe posterior segment . Moderate cardiac enlargement but no evidence of CHF . Followup chest examination after treatment is recommended in approximately two weeks .