Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes without pleural effusion , focal consolidation or pneumothorax . Left lung base opacities are noted . Hilar and mediastinal silhouettes are unchanged . Heart size is normal . There is no pulmonary edema . Partially imaged upper abdomen is unremarkable . An IVC filter is in place .
    OUTPUT:
    
Left lung base opacity , likely atelectasis . This portion of the left lower lobe will be included in CT abdomen / pelvis scheduled for later today . Findings discussed with Dr . ___ at 7 : 50 am ___ by phone at the time of discovery .