Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable and within normal limits . The hila are unremarkable . Lower lung opacification seen only on lateral view is favored to represent atelectasis in the setting of a suboptimal inspiratory effort . There is no correlate on frontal view with a better inspiration . There is no pulmonary venous congestion or pulmonary edema . There is no pneumothorax or pleural effusion . There is no evidence of a displaced rib fracture .
    OUTPUT:
    
Lower lobe opacity on lateral view is favored represent atelectasis in the setting of a suboptimal inspiratory effort . No acute cardiopulmonary process . No displaced rib fracture identified .