Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight blunting of the right costophrenic angle is stable may be due to pleural thickening or possibly very trace pleural fluid . No focal consolidation is seen . There is no evidence of pneumothorax . The aorta is tortuous . The cardiac silhouette is mildly enlarged . No pulmonary edema is seen .
    OUTPUT:
    
No significant interval change . Slight blunting of the right costophrenic angle is chronic , possibly due to pleural thickening or trace pleural fluid .