Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of cardiac silhouette is unchanged . The aorta is mildly tortuous and diffusely calcified . There is mild interstitial pulmonary edema , slightly worse in the interval . Small bilateral pleural effusions are present . There is no pneumothorax . Multilevel degenerative changes are visualized in the thoracic spine with partially imaged lumbar fusion hardware .
    OUTPUT:
    
Mild congestive heart failure with small bilateral pleural effusions .