Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A frontal semi-upright view of the chest was obtained portably . There is no focal consolidation or pneumothorax . Left basilar opacity is likely atelectasis and small left effusion . Cardiac and mediastinal silhouettes and hilar contours are stable .
    OUTPUT:
    
Left basilar atelectasis and small left effusion . No pneumonia or edema .