Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's condition required examination in sitting upright position using AP frontal and left lateral views . Comparison is made with the next preceding similar study of ___ . Status post sternotomy , cardiac enlargement and previously identified left - sided permanent pacer with evidence of right atrial and biventricular pacing electrodes in unchanged position . The previously identified advanced interstitial edema with patchy densities in bilateral position has markedly improved . No new local discrete pulmonary parenchymal infiltrates are present , nor is there evidence of increased pleural effusion in either lateral or posterior pleural sinuses . No evidence of pneumothorax in the apical area .
    OUTPUT:
    
Improvement of previously identified chronic pulmonary congestion without evidence of increased pleural effusion or development of acute pulmonary parenchymal infiltrates . Position of previously identified aortic valve - ascending aortic stent ( CoreValve ) appears unchanged .