Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is blunting of the left costophrenic angle , consistent with a small pleural effusion . No focal consolidation is seen . There is mild right base atelectasis . No right pleural effusion is seen . There is no evidence of pneumothorax . The aorta is tortuous . The cardiac silhouette is top normal . Mild degenerative changes are seen along the spine .
    OUTPUT:
    
Small left pleural effusion .