Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single view AP chest view has been obtained with the patient in semi-upright position . There is considerable cardiac enlargement , although this may be exaggerated by the portable technique . No typical configurational abnormalities identified . Thoracic aorta of ordinary ___ but calcium deposits are present in the wall at the level of the arch . The pulmonary vasculature shows a mild degree of perivascular haze , but there is no evidence of interstitial alveolar edema . Large soft tissue structures are overlying the lung bases , but no gross pulmonary abnormalities can be identified and the lateral pleural sinuses appear free . Our records do not include a previous chest examination available for comparison .
    OUTPUT:
    
No conclusive evidence for pneumonic infiltrate on portable single view chest examination . Review of the most recent abdominal CT has been performed and the lung bases are inspected . There were bilateral atelectasis and some pleural densities , probably scar formations but no acute pneumonic infiltrate was present on ___ .