Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pacer device is noted with single lead terminating in the right ventricle . Mild cardiomegaly is unchanged . The mediastinal and hilar contours are similar . There is mild upper zone vascular redistribution likely due to supine positioning . No large pleural effusion or pneumothorax is seen . There is no focal consolidation . A VP shunt catheter courses along the right aspect of the chest and into the right upper abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .