Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's physical condition required examination in sitting semi-upright position using AP , frontal , and left lateral views . There is moderate cardiac enlargement . There is a relative prominence of the left ventricular contour and moderate enlargement of the left atrium which bulges posteriorly on the lateral view . The thoracic aorta is moderately widened and elongated and calcium deposits are noted in the wall mostly at the level of the arch . The pulmonary vasculature demonstrates an upper zone redistribution pattern and considerable perivascular haze on the lung bases . This coincides with some mild blunting of the lateral and posterior pleural sinuses , all consistent with some mild - to - moderate degree of chronic CHF . On the right base , some linear densities are consistent with peripheral atelectasis . There is no evidence of any discrete local pneumonic infiltrate . As there exists no prior chest examination available for comparison , it is difficult to determine whether the right - sided basal lung changes present peripheral atelectasis with poor ventilation of a congested lung or if additional inflammatory infiltrates exist . If clinically important , a followup examination in a few days could be useful .
    OUTPUT:
    
Moderate cardiac enlargement and signs of mild - to - moderate degree of chronic CHF . Questionable acute infiltrates on the right lung base , but no discrete pneumonia identified .