Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Left chest wall pacer device is noted with leads extending into the right heart as on prior . Bilateral small pleural effusions persist with basilar opacities most compatible with atelectasis versus aspiration . The overall appearance of the chest is unchanged . Cardiomediastinal silhouette appears grossly stable allowing for differences in position . Bony structures remain intact .
    OUTPUT:
    
Lower lung opacities concerning for atelectasis versus aspiration / pneumonia . Small bilateral pleural effusions persist .