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Cancer of the esophagus

Gullet (esophagus) is a muscular tube about 25 cm in length, at which the food passes from the throat to the stomach ...



The muscle layers of the esophagus are spread during the passage of food and the contract to accelerate its path to the stomach. At the lower end of the esophagus with the stomach junction and there is a circular muscle (Lower Esophageal Sphincter) which allows the passage of food into the stomach. This muscle is normally pinched and relaxes after contact with food, let her pass, and then closes and prevents the return of gastric contents into the esophagus. The interior (cavity) is lined esophageal mucosa, which differs from the lining of the stomach and not allow for frequent contact with acid. Acids normally found in the stomach where there is a role in digestion of food. Prolonged presence of acid in the esophagus causes a range of damage. Esophagus from the thoracic into the abdominal cavity through an opening in the diaphragm (the diaphragm), a large flat muscle that separates the two cavities and has a role in breathing. The opening in the diaphragm through which the esophagus is called dijafragmaticni hiatus. Cancer of the esophagus Cancer of the esophagus is divided depending on the origin and appearance of cells under a microscope, the two main subtypes: * Squamous cell carcinoma (also known as epidermoid carcinoma) arising in the squamous cells lining the esophagus. (Squamous cells are found in the tissues that form the surface of the skin, coat the porous organ in the body and out in the respiratory and digestive tract.) This type of cancer usually develops in the upper and middle part of the esophagus. * Adenocarcinomas (developed in the cells that line certain internal organs and have a glandular structure) usually develops in the glandular tissue of the lower esophagus. Treatment was similar for both types of cancer.




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