Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Given low lung volumes , evaluation is limited . Allowing for this , no convincing signs of pneumonia , effusion or pneumothorax . Heart size is difficult to assess . Mediastinal contour is slightly prominent likely reflecting on full but thoracic aorta . Bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Limited study without definite signs of acute intrathoracic process . If there is strong clinical concern , would recommend repeat with more optimal inspiratory effort .