FIGURE 124.15 A: A 13-year-old girl developed first right-sided and then left-sided epigastric pain with retching but little or no vomitus She had grunting respirations A radiograph revealed a large air- and fluid-filled mass in the left side of the lower chest B: As shown in the diagram, a nasogastric tube would not pass into the stomach FIGURE 124.16 Malignant chest wall tumors in children Most common lesions and their usual sites of origin are shown