The esophagus is part of the gastrointestinal tract. Its function is to move food from the mouth to the stomach for digestion. It is classified as a muscle and is composed of several layers: inner lining, submucosa, muscle layer, and outer layer. Esophagus cancer generally begins growing in the inner layer of the esophagus and can spread to the surround tissues. Cancer cells can also break off and find their way to other parts of the body inducing other cancerous tumors to grow. This is called metastasis. It is unknown what causes esophageal cancer but risk factors that increase your chances of developing the disease include being over the age of 65, being male, smoking, drinking heavily, unhealthy died, obesity, and acid reflux. Esophagus cancer is asymptomatic meaning it typically does not present any symptoms. However difficulty swallowing, unexplained weight loss, chest pain, and fatigue have been associated with the disease. It is a good idea to make an appointment with your heal