Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: This examination is underpenetrated , accentuating density of the parenchyma . Heart size is mildly enlarged . Low lung volumes accentuate heart size and pulmonary vasculature howevere there is no overt fluid overload . Lungs are clear . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
No cardiopulmonary abnormality on this underpenetrated study .