Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Since the prior study , there has been interval development of a small right pleural effusion . Difficult to completely exclude a trace left pleural effusion . There are increased interstitial markings bilaterally consistent with moderate interstitial edema . The cardiac silhouette is mildly enlarged . The aorta remains calcified . Biapical right greater than left pleural parenchymal scarring is seen .
    OUTPUT:
    
Right pleural effusion and moderate interstitial pulmonary edema .