Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . An opacity in the left lower lobe may represent atelectasis as a result of suboptimal inspiration or infection . The right lung is clear . The cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . Pleural surfaces are normal .
    OUTPUT:
    
Left lower lobe opacity could represent infection or atelectasis in the setting of suboptimal inspiration . If suspicion is not strong for pneumonia , a followup chest x-ray at full inspiration can be obtained for no additional charge . Findings were discussed with Dr . ___ by Dr . ___ on ___ at 16 : 45 , ___ min after findings were made .