Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral crescentic subdiaphragmatic lucencies correspond to moderate pneumoperitoneum , new since ___ . The stomach is moderately distended . The lungs are well expanded and clear , without focal consolidation or pulmonary edema . No pleural effusion or pneumothorax . The heart size is normal . The mediastinal contours , hila , and pleura are unremarkable and unchanged .
    OUTPUT:
    
1 . Moderate pneumoperitoneum , new since ___ , and is likely secondary to recent open colorectal surgery . 2 . No pneumonia or other acute cardiopulmonary process .