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(dÄ«'vÃ»r-tÄ­k'yÉ-lÉm) Plural diverticula. A pouch or sac branching out from a portion of the gastrointestinal tract, especially the large intestine. A diverticulum can occur as a normal structure, or it can be caused by a hernia.
Diverticula are outpouchings of one or more layers of the intestinal wall that may occur at any level of the esophagus. The number of intestinal wall layers involved distinguishes the true, false, and intramural types of diverticula.iverticula are outpouchings of one or more layers of the intestinal wall that may occur at any level of the esophagus. The number of intestinal wall layers involved distinguishes the true, false, and intramural types of diverticula.