Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views have been obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study dated ___ . There exists no previous chest examination as of ___ . There is moderate cardiac enlargement . The configuration indicates an additional prominence of the left atrial appendage on the frontal view suggestive of moderate enlargement of the left atrium ( clinical nodes include evidence of atrial fibrillation ) . The thoracic aorta is mildly widened and elongated but does not show any local contour abnormality . The pulmonary vasculature demonstrates again an upper zone redistribution pattern , similar as seen on the examination one year ago . There is some mild blunting of the lateral pleural sinuses also visible in the posterior sinuses on the lateral view . Acute parenchymal infiltrates can not be identified and there is no evidence of pneumothorax in the apical area . A suspicious parenchymal infiltrate involving the left upper lobe lingula adjacent to the left lateral cardiac border can not be seen anymore . Comparison is extended to a chest examination of ___ , at which time the heart size was slightly lesser than now . Can also be observed that the pulmonary vasculature did not show the same degree of upper zone redistribution of the pulmonary circulation and the lateral pleural sinuses where completely free from any blunting at all .
    OUTPUT:
    
Moderate degree of cardiomegaly in patient with history of chronic atrial fibrillation . Mild blunting of the pleural sinuses suggestive of mild degree of chronic CHF . Stable cardiac and pleural blunting findings in comparison with the next preceding chest examination of ___ .