Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Multiple old right - sided rib fractures are again seen . On the lateral view , there is what appeared to be posterior lower lung opacity , new since the prior study , difficult to discern whether right or left lung , although may be within the right lower lobe . There is left base plate - like atelectasis . No large pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Posterior lower lobe opacity seen on the lateral view inferiorly could be due to underlying consolidation .