Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph . Pulmonary opacification has progressed in the right lower lobe , but improved in the left lung compared to three hours prior . The heart size is stable . Small pleural effusion is now present on the right . There is no pneumothorax .
    OUTPUT:
    
Worsening right lower opacity in the setting of improving interstitial edema raises concern for concurrent pneumonia .