Diverticulum - Definition

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A diverticulum is an abnormal cavity appearing as a small bag on the surface of a mucus membrane. Its origin can be pathological and acquired, or a remainder that was supposed to disappear. Meckel's diverticulum is a small pouch in the intestine which persists abnormally in some people. Zencker's diverticulum forms by itself and is located in the esophagus. The most common diverticula are located in the mucosa of the colon and form at a weakness in the wall. In the absence of inflammation, these diverticula are not responsible for any symptoms.