Esophageal Cancer
Esophageal cancer is a
malignant condition that develops in the cells lining the inside of the esophagus.
Your esophagus is a
muscular tube that connects the pharynx to the cardia of the stomach, also called esophagogastric junction or
gastroesophageal junction. As part of the digestive tract, the esophagus is located between your spine and
lungs. Its main role is to transport solids and liquids foods into your stomach through peristalsis, involuntary
muscle contractions that occur in different vessels of the esophageal tube.
To carry foods and drinks
into the stomach, the muscles of the esophagus contract in a rhythmic, wave-like motion. Once in the stomach, foods are prevented from
returning into the esophagus by the muscles of the esophagogastric junction, a sphincter located between the
esophagus and stomach.
Esophageal cancer occurs
when, due certain pathogenic factors, some cells that line the inside of the esophagus multiply anarchically and
form a malignant growth.
Incidence
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