Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . The aorta is mildly tortuous . The pulmonary vasculature is normal . Hilar contours are unremarkable . Consolidative opacity in the left lower lobe is concerning for pneumonia . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Left lower lobe pneumonia . Followup radiographs after treatment are recommended to ensure resolution of this finding .