Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is no focal consolidation , effusion , or pneumothorax . Heart size is top normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
1 . No evidence of pulmonary edema . 2 . When compared with the previous study , there has been substantial increase in size of the cardiac silhouette without evidence of pulmonary vascular congestion . This is consistent either with interval development of cardiomyopathy or pericardial effusion , which is the clinical diagnosis at this time .