Stage IIIA adenocarcinoma of the esophagus (2); drawing shows the esophagus, trachea, and lung. The top inset shows cancer that has spread from the esophagus into the diaphragm and pleura; the aorta, chest wall, and rib are also shown. The bottom inset shows cancer that has spread from the esophagus into the membrane (sac) around the heart.