Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates interval increase in pulmonary edema , worse on the right . Probable small left - sided pleural effusion . Engorged mediastinal veins and azygus vein , increased from prior , resulting in widening of the superior mediastinum . There is no pneumothorax .
    OUTPUT:
    
Bilateral pulmonary edema , worse on the right .