16. Dysphagia
It means difficulty or pain when trying to swallow food. In more severe cases, even drinking water can be uncomfortable. This happens because very large tumors located on the midline compress the esophagus. This is the part of the digestive tube that connects the mouth and the stomach. Other causes of dysphagia, such as GERD, should be excluded, but a simple radiograph can be enough to see the lesion and diagnose the disease.