Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Pigtail catheter is noted at the right lung base . There has been slight decrease in the right pleural effusion post - thoracentesis . Small left effusion is unchanged . Persistent hazy opacities throughout the middle and lower lobes . There is central venous congestion and probable mild interstitial edema . Heart size is normal . The aorta is tortuous and calcified . Parathyroidectomy clips are noted in the superior mediastinum .
    OUTPUT:
    
1 . Decreased right and stable left pleural effusions . 2 . Bilateral lower lobe opacities could represent atelectasis or infection . 3 . Mild pulmonary edema .