Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is large pneumoperitoneum . There is no consolidation , pleural effusion , or pneumothorax . Cardiomediastinal silhouette is normal size .
    OUTPUT:
    
1 . There is large pneumoperitoneum . At the time of dictation patient has had subsequent CT abdomen and pelvis which showed pneumoperitoneum without clear source . 2 . No evidence of pneumonia .