Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are within normal limits . As compared to prior chest radiograph from ___ , lung volumes are decreased . There is no focal consolidation , pleural effusion or pneumothorax . A shunt catheter traverses the left neck , chest and passes into the abdomen , its tip terminates in the right upper quadrant .
    OUTPUT:
    
No acute cardiopulmonary process .