Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , lungs are clear without pleural effusion , focal consolidations or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal . There is no pulmonary edema . Free intraperitoneal air is seen under the left hemidiaphragm . NG tube terminates in the stomach .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . Free intraperitoneal air . Please refer to concurrent CT abdomen for further details .