Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: NG and ET tubes are in unchanged , standard positions with the NG tube coursing into the upper stomach . The cardiomediastinal and hilar contours are stable with top - normal heart size , increased in size from the most recent prior study . There is no pleural effusion or pneumothorax . The lungs are well expanded . Heterogeneous opacities at the lung bases are improved slightly at the left lung base but worsened on the right lung base and may reflect recent aspiration or pulmonary edema .
    OUTPUT:
    
Heterogeneous bibasilar opacities , greater on the left , consistent with recent aspiration or pulmonary edema .