Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding similar study dated ___ . Moderate cardiomegaly , similar configurational appearance persists , rather unchanged . There is a relative prominence of the left ventricular contour to the left , but the lateral view also discloses some enlargement of the left atrium in posterior direction . The thoracic aorta is moderately widened and elongated . There exists also an unusual prominence of the right atrial contour and the azygos vein contour is moderately distended . The pulmonary vasculature demonstrates an upper zone re-distribution pattern , but there is no evidence of advanced interstitial or alveolar edema and the pleural sinuses are free . No pneumothorax in the apical area . No evidence of local discrete parenchymal infiltrates of inflammatory nature . The degree of cardiomegaly is rather stable . Likewise , there is no evidence of increased pulmonary congestion or pleural effusion . No acute infiltrates are seen . If not already performed earlier , an echocardiogram could be of diagnostic interest and importance .
    OUTPUT:
    
Persistent moderate cardiomegaly , but absence of acute CHF or acute pulmonary infiltrates .