Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy right base opacity is worrisome for pneumonia . More subtle left base opacity is seen which could be due to atelectasis although infectious process or aspiration not excluded in the appropriate clinical setting . No large pleural effusion is seen . There is no evidence of pneumothorax . The cardiac silhouette is top - normal . Mediastinal contours are grossly unremarkable . Multiple old bilateral rib fractures / deformities are seen .
    OUTPUT:
    
Patchy right base opacity worrisome for pneumonia . More subtle left base opacity could be due to atelectasis , although infection or aspiration not excluded in the appropriate clinical setting .