Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vascularity is normal . Consolidative opacity in the left lower lobe is concerning for pneumonia . Right lung is clear . No pleural effusion or pneumothorax is seen . No acute osseous abnormality is detected .
    OUTPUT:
    
Left lower lobe pneumonia . Follow up radiographs after treatment are recommended to ensure resolution of this finding .