Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes , which results in bronchovascular crowding . There are bibasalar opacities , which may represent atelectasis , aspiration , or pneumonia in the appropriate clinical setting . And small left pleural effusion . The cardiac silhouette is not enlarged . There is no pneumothorax .
    OUTPUT:
    
1 . Bibasalar opacities , which may represent atelectasis , aspiration , or pneumonia in the appropriate clinical setting 2 . Small left pleural effusion .