Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is rotated somewhat to the left . Previously seen right - sided PICC is no longer seen . The patient is status post median sternotomy and cardiac valve replacements . There is a small left pleural effusion . Trace right pleural effusion may also be present . There is mild to moderate pulmonary edema . The cardiac silhouette remains enlarged . The aortic knob is calcified .
    OUTPUT:
    
Enlarged cardiac silhouette , small pleural effusions and pulmonary edema suggest fluid overload possibly due to CHF .