Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bibasilar opacities improved since study from ___ likely represents improved pulmonary edema versus resolving multifocal pneumonia . No pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Improved noncardiac pulmonary edema , including drug related pulmonary reaction , or resolving multifocal pneumonia .