What are esophageal cancer symptoms?

The early symptoms of esophageal cancer are often not obvious, but there may be varying degrees of discomfort when swallowing coarse and hard food. Typical symptoms are progressive dysphagia, such as a little choking at the beginning of eating, only drinking porridge, and later drinking porridge, even drinking water, and even vomiting. This is called hiccup, which is a typical symptom of esophageal cancer.