Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to the chest radiograph from the same day , there is a stable moderate left pleural effusion with atelectasis . There is moderate cardiomegaly , with indistinctness of the pulmonary vessels , indicative of an element of vascular congestion . There is no pneumothorax . There is no focal opacity in the right lung concerning for pneumonia . Surgical fixation devices are present overlying the thoracolumbar spine .
    OUTPUT:
    
Stable appearance of moderate left pleural effusion with atelectasis . No pneumonia .