Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . Mild interstitial edema seen on the previous study has improved in the interval with possible minimal residual remaining . Mild enlargement of the cardiac silhouette persists . Mediastinal and hilar contours are stable . Degenerative changes are seen along the spine .
    OUTPUT:
    
Cardiomegaly with minimal interstitial edema , improved since the prior study . No large pulmonary mass is seen , however , CT is more sensitive .