Lips, teeth, gums, buccal mucosa (inner lining of the lips and cheeks), floor of the mouth, the palate and the small area behind the wisdom teeth. All these areas are what make up the oral cavity, near the pharynx (posterior third of the tongue and throat, and tonsils) are the regions that are affected by malignant cells. On the other hand, between the throat and stomach, the tube through which pass, among other substances, drink and food, is the esophagus. It is located just behind the trachea immediately and in an adult has a length of around 25 centimeters.
Tumors are located in this area are usually of two types, depending on the character of malignant cells: carcinomas and adenocarcinomas. The first, squamous-cell carcinomas by their flat form similar to a flake-, originating from the layer of cells lining the inner walls of the mouth and esophagus. In the earliest stages, these tumors are located, and only when the disease progresses and malignant cells extend to speak of invasive cancer. Adenocarcinomas, for their part, are those tumors that are located in glandular cells (those that secrete mucus liquid for coating the walls of internal organs).
When the disease spreads, the malignant cells reach the lymph system, a complex network of vessels, valves, ducts, nodes and organs located throughout the body that help protect the body’s fluid environment through production, transportation filtration and lymph The fluid contains cells that fight disease and infection. Cancer cells, for transportation, used precisely the lymph nodes, small accumulations of defensive cells. In the case of oral cancer, these nodes often travel to the neck, although it is possible to reach other parts of the body (liver, lungs, bones and even brain), as with tumors arising in the esophagus.