Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . There are relatively low lung volumes . Given this , no focal consolidation , pleural effusion or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . No overt pulmonary edema is seen .
    OUTPUT:
    
Low lung volumes . Otherwise , no acute cardiopulmonary process seen .