Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal . Patchy ill - defined opacities are noted within the left mid lung field and left lung base as well as to a lesser extent within the right lung base . No pleural effusion or pneumothorax is visualized . There are no acute osseous abnormalities . Subdiaphragmatic free air is noted on the right .
    OUTPUT:
    
1 . Multifocal pneumonia . 2 . Pneumoperitoneum .