Esophageal cancer is a type of cancer that originates in the inner lining of the esophagus. As the tumor grows, the cancer cells spread through the other layers. Sometimes, the cancer spreads to nearby organs as well, such as the liver, lungs, and lymph nodes. It progresses through multiple stages as different symptoms appear over time. Here are a few things to know about esophageal cancer signs, treatment, and risk factors to watch out for. Esophageal cancer signs In most cases, esophageal cancer is diagnosed only in the advanced stages. This is because the symptoms rarely show up in the initial stages. But, if there is a cancer risk, it is better to take preventive measures and watch out for the following signs. Chronic cough This symptom is generally experienced in the advanced stages of esophageal cancer. During this time, the esophagus becomes narrow with the growth of the tumor. This irritates the throat. Most people tend to experience frequent coughing, which can feel like something is stuck in their throat. However, chronic coughing can lead to a hoarse voice over time, which is a significant indicator of esophageal cancer. Trouble swallowing The growth of cancer over time also causes issues with swallowing.