Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Focal airspace opacities in the left lung base corresponding to the left lower lobe on the lateral view radiograph are consistent with left lower lobe pneumonia . There is no pleural effusion , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is within normal limits . Incidental note is made of changes related to known old right clavicular fracture .
    OUTPUT:
    
Focal opacity left base consistent with left lower lobe pneumonia . Followup imaging to confirm resolution is recommended .