My husband is going to Sloan and was diagnosed with pancreatic cancer on May 6th 2014. They found out that it was really esophagus cancer and not pancreatic in January of 2017, and now want to put a stent into his esophagus. How much pain will he be in and for how long? Will he be able to eat or is this the end of the line? Tumor is blocking food now? I am worried and thanks in advance. He was 167 pounds a year ago and went down to 120 weighed in this morning. He is very weak from not enough food. Will this help? Thanks in advance.