Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding PA and lateral chest examination of ___ . Moderate enlargement of cardiac contours similar as before . Noted is a regression of the previously existing distention of the azygos vein contour . The pulmonary vasculature which was congested with distended appearance of the pulmonary vasculature and considerable perivascular haze has now normalized . No evidence of acute pulmonary infiltrates remain and the lateral and posterior pleural sinuses are free . No pneumothorax exists in the apical area . Skeletal structures of the thorax remain unremarkable as before .
    OUTPUT:
    
Regression of pulmonary congestion with signs of pre-edema in the right lung base . Presently no remaining congestive pattern and the pleural spaces are free . The chest CT of ___ obtained one day after the preceding PA and lateral chest examination is also reviewed . There existed increased density of the vasculature in the right lower lobe area on the CT examination with the patient in supine position . These densities were identified as possibly representing local edema , atelectasis or inflammatory infiltrate . As from the plain pa & lat chest appearance and its present resolution , it is more likely that it consisted of local edema in this patient with evidence of CHF at that time .