Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Ventriculoperitoneal shunt catheter courses over the right side of the chest . It seems to make a loop where it projects over the lower right costophrenic angle and then extends laterally coursing over the lateral side of the junction between the chest and abdomen . It s distal course is not assessed . There is a moderate hiatal hernia . The patient is status post sternotomy . The heart is mildly enlarged . The aorta is tortuous . The cardiac , mediastinal and hilar contours appear stable . There is no definite pleural effusion or pneumothorax . Streaky opacities at the lung bases , greater on the right than left , have decreased and suggest minor atelectasis .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease .