Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chronic changes of the lungs are once again present , which includes increase in the interstitial markings ; however , there is no evidence of consolidation to suggest acute pneumonia . The aorta remains tortuous and partially calcified . Ventriculostomy shunt is noted coursing through the left hemithorax . There is no pleural effusion , pulmonary edema or pneumothorax identified . There is no free air .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .