Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is limited due to the patient 's body habitus and low lung volumes resulting in bronchovascular crowding . Allowing for this limitation , there is no focal opacity to suggest pneumonia . Mild cardiomegaly may be present but assessment is limited by lung hypoinflation and AP projection . Otherwise , cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Limited due to low lung volumes . No evidence of acute cardiopulmonary process .