Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette remains stable . Calcification of the aortic knob is again noted . There are increased bilateral hilar and perihilar markings , greater on the right . Additionally , diffuse interstitial markings are increased . There is no pneumothorax . Small bilateral pleural effusions are present with bibasilar atelectasis .
    OUTPUT:
    
Small pleural effusions with bibasilar atelectasis and mild pulmonary edema suggestive of volume overload . Underlying pneumonia can not be excluded .