Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One AP view of the chest . The lateral part of the left hemithorax is not imaged . There is a left lower lobe condsolidation concerning for pneumonia . Upper lung zones appear clear . There is no definite pleural effusion on the right . There may be a small pleural effusion on the left . Mediastinal contours are unremarkable .
    OUTPUT:
    
Left lower lobe pneumonia , alternatively this may represent atlectasis . Likely small left pleural effusion .