Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph again demonstrates a right chest wall port with the catheter terminating in the upper right atrium . Lung volumes are low , with exaggeration of the cardiac silhouette . There is increasing patchy opacity in the bilateral lower lobes , some of which could be atelectasis , but are also concerning for multifocal pneumonia . There is no appreciable pleural effusion or pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Increasing patchy opacities in the bilateral lower lobes , which could be in part due to atelectasis given lower lung volumes , but are also concerning for multifocal pneumonia .