The esophagus is a tubular passage for food, extending from the patient's pharynx to the stomach, thus named the esophagus. Its function is to allow food to travel from the mouth through the esophagus to the stomach. If a tumor develops in the esophagus, early symptoms can include difficulty swallowing, a choking sensation, and inability to swallow food, which sometimes may lead to vomiting. These are early symptoms of esophageal cancer. If the condition progresses to a late stage, it can lead to a situation where not even liquids can pass, making swallowing impossible, resulting in extreme weight loss. In severe cases, the cancer may metastasize, including to lymph nodes and other organs, and may also compress surrounding organs, causing symptoms like chest tightness.