Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is greater radiodensity over the left lower hemithorax as well as in the retrocardiac region , however is not clear if this is due to simply soft tissue or actual pathology . Appears clear . The heart size is within normal limits . There is a pacemaker with 3 leads appropriate position . There is no pulmonary edemaand there is no pneumothorax .
    OUTPUT:
    
Greater radiodensity over the left lower hemi thorax may be artifactual . A lateral radiographs is needed to see if there is a genuine abnormality in the left lower lobe .