Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left basilar pigtail chest tube is in place . Since prior , there has been worsening left basilar and retrocardiac opacification with decreased lung volumes . Increased interstitial markings , likely represent mild interstitial edema . Relative lucencies at the lung apices likely represent bulla . The mediastinal contour has not significantly changed . There is no pneumothorax .
    OUTPUT:
    
1 . Worsening left basilar opacity concerning for worsening pneumonia . 2 . Mild interstitial edema .