Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The hilar mediastinal contours are normal . A consolidation is seen at the left lung base , with a moderate left pleural effusion . Adjacent streaky atelectasis is identified . There is no pneumothorax . The visualized osseous structures are unremarkable .
    OUTPUT:
    
Consolidation at the left lung base , with moderate pleural effusion , may be secondary to pneumonia .