Figure 13b. (a) Frontal view of the chest shows an esophageal stent (black arrows) that was placed to ameliorate the effects of an esophageal malignancy. There are also two chest tubes (*), a peripherally inserted central catheter (white arrow), ECG leads (E), a gown snap (G), and a transjugular intrahepatic portosystemic shunt (T) in the liver. (b) Frontal chest radiograph of an infant shows a pH probe.