Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 734 is submitted .
    OUTPUT:
    
The patient 's mandible obscures the upper lungs . There has been interval development of focal airspace consolidation in both lung bases , right greater the left , which in the correct clinical setting would be concerning for pneumonia or aspiration , less likely atelectasis . No evidence of pulmonary edema . The heart remains stably enlarged . Multiple surgical clips are again seen in the left upper quadrant . Pneumothorax can not be excluded .