Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright chest radiograph was provided . Lung volumes are markedly low , which limits the evaluation . There is likely a small right pleural effusion . Bibasilar atelectasis is also likely present . The size can not be assessed . No large pneumothorax is seen . Bony structures appear grossly intact .
    OUTPUT:
    
Limited , bibasilar atelectasis , likely small right effusion .