Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild cardiomegaly , stable compared to prior exams at least dating back to ___ . The aorta is tortuous , otherwise the hilar and mediastinal contours are stable . There is a small left pleural effusion status post left thoracentesis . No definite pneumothorax is seen . There are heterogeneous right lower lung opacities likely secondary to re-expansion edema given patient 's thoracentesis on ___ . There is mild left lower lobe atelectasis .
    OUTPUT:
    
1 . Interval improvement of the small left pleural effusion status post thoracentesis . No definite pneumothorax . 2 . New heterogeneous right lower lung opacity , likely secondary to re-expansion edema s / p patient 's right sided thoracentesis on ___ .