Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged . The hilar and mediastinal contours are normal . There is a consolidation at the left lung base . There is mild right basilar atelectasis . There is no evidence of pneumothorax . The visualized osseous structures are unremarkable . There is no large pleural effusion .
    OUTPUT:
    
Consolidation at the left lower lobe is concerning for pneumonia . A chest CT would be recommended for further evaluation of metastatic lesions .