Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient 's condition required examination in sitting position using AP frontal and left lateral views . Comparison is made with the single view chest examination obtained seven hours earlier during the same day . Moderate cardiomegaly as before with configuration indicating left ventricular prominence . Thoracic aorta unchanged . The previously identified severe pulmonary congestive pattern with extensive interstitial and alveolar edema has markedly improved . Aeration is now much better , and the pattern of central pulmonary edema has regressed . There is still some interstitial edema present , and on the frontal view , mild degree of blunting of the lateral pleural sinuses is observed . The lateral view discloses pleural effusion accumulating in the posterior pleural sinuses , but the amount is moderate . No pneumothorax has developed . No new discrete pulmonary parenchymal infiltrates are seen .
    OUTPUT:
    
Marked improvement of congestive pulmonary pattern and edema related to dehydration - Lasix therapy .