Chest radiograph, day 5 of admission.Radiologic upright film of the chest demonstrates right-sided, free intraperitoneal air (red arrow). Possible gastric bubble visualized cannot rule out left-sided, free intraperitoneal air. No evidence of other acute changes, such as enlargement of the mediastinum, cardiomegaly, pleural effusion, or pneumothorax. Electrocardiogram wires visualized.