For esophageal cancer, usually part of the esophagus cancer (sometimes stomach is removed) and then the esohpagus and stomach are connected. What if the cancer has spread throughout the esophagus, could surgery still be used? Maybe to decrease the size of the cancer or is that useless? Also, is esophageal cancer the fastest type to spread because of the coordinated muscles squeezing regularly, could that motion also spread cancerous squamous cells/