Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . Aorta is tortuous and diffusely calcified . The pulmonary vasculature is normal . Patchy opacities within both lung bases likely reflect aspiration or small airways infection , better seen on the recent CT . Small right pleural effusion is also better demonstrated on the recent CT . No pneumothorax is seen . Large amount of pneumoperitoneum is demonstrated .
    OUTPUT:
    
Pneumoperitoneum . Patchy bibasilar airspace opacities likely reflecting aspiration or small airway infection . Small right pleural effusion is better demonstrated on the recent CT .