Esophageal conditions can cause a variety of symptoms — including heartburn, chest discomfort and difficulty swallowing — that can drastically impact your quality of life and inhibit your ability to eat and drink normally. The most serious of these esophageal conditions is esophageal cancer.
http://www.dailyprogress.com/lifestyles/vital-signs-early-detection-of-esophageal-cancer-can-be-difficult/article_93d167ca-181b-11e8-993c-57087d3d7318.html
Vital Signs: Early detection of esophageal cancer can be difficult