Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouettes are stable , and within normal limits . The bilateral hila are unremarkable . There is probably minimal left basilar atelectasis . There is a left lung base opacity which is more conspicuous since prior from ___ . Elsewhere , there is no focal consolidation . There is no pulmonary vascular congestion or pulmonary edema . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Left lung opacity is more conspicuous since prior from ___ , and could represent recurrent aspiration or pneumonia in the appropriate clinical setting .