Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . The pulmonary vasculature is normal . A focus of consolidation within the left lower lobe is concerning for pneumonia . Right lung is clear . No pleural effusion or pneumothorax is clearly seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Left lower lobe pneumonia . Followup radiographs after treatment are recommended to ensure resolution of this finding .