Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: New ill - defined alveolar opacities in the left lower lobe that are more visible on the lateral view . No pleural effusion . No pneumothorax . Cardiac contour and mediastinal contours are stable .
    OUTPUT:
    
Pneumonia of the left lower lobe . A followup chest x-ray is recommended to assess the resolution of the pneumonia .