Post sternal pain is not esophageal cancer. Post sternal pain may be coronary heart disease, angina pectoris, which is characterized by boring pain behind the sternum, pressure-like and squeezing pain; there is also aortic coarctation, which is a severe pain behind the sternum. Esophageal cancer pain is the pain in the back after the advanced stage of esophageal cancer, which is mainly due to the tumor invading the intercostal nerves in the back, because the esophagus grows close to the spine, so it is the pain in the back. As for the pain behind the sternum, its organ is mainly the aorta, so the aortic dissection pain is mainly located behind the sternum.