Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low . There is increased opacity throughout both lungs , predominantly at the bases . There is a small pleural effusion and no pneumothorax . The pulmonary vasculature is mildly enlarged . Cervical fixation hardware is re - demonstrated .
    OUTPUT:
    
Bilateral pulmonary opacities as well as central venous congestion suggests mild to moderate pulmonary edema .