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An abnormal outpocketing or sac on the wall of a hollow organ.



a pouch formed by the congenital or acquired protrusion of the wall of a tubular organ in man. Most frequently encountered are diverticula of the esophagus or urinary bladder and more rarely, of the duodenum or stomach. Congenital diverticula are associated with defects in the development of the organ. Acquired diverticula arise as a result of pressure from the organ cavity on its wall, which has been weakened either by a pathological process (trauma, inflammation), or they may result from congenital muscular weakness of the wall (pouch-like protrusion). Diverticula may develop when diseases of neighboring organs result in a pulling on the organ wall by cicatrices and adhesions (funnel-shaped protrusion). After it has entered a diverticulum, the content of an organ is retained there for some time; later the diverticulum is evacuated. The diverticulum gradually stretches and becomes enlarged, and evacuation becomes difficult. The stagnant content irritates the mucous membrane of the diverticulum and becomes infected. Inflammation of the walls of the diverticulum develops—diverticulitis (catarrhal, ulcerative, or phlegmonous; perforation of the diverticulum is possible). A diverticulum of the esophagus may manifest itself by difficulty of food passage and vomiting and a diverticulum of the urinary bladder, by difficulty in urinating. An intestinal diverticulum sometimes causes obstruction. Treatment depends on the site and the course of the illness; in some cases surgery is necessary.

References in periodicals archive ?
Self-Help Strategies The best way to prevent diverticula from causing complications is to eat a diet high in fiber from fresh fruits and vegetables, beans, nuts, corn, and whole-grain foods.
2-4,7) Diverticula occur more commonly in jejunum and in the terminal ileum, probably due to the larger size of the vasa recta.
sup][6],[7] In recent years, flexible ureteroscopy (FURS) has been used for the treatment of calyceal diverticula.
The provocative findings from our study are twofold: We found that the prevalence of diverticula is higher in men and lower in women younger than age 50, and that obesity is a risk factor for diverticula in women but not in men," Dr Peery said.
A diet low in fiber can result in increased colonic pressure, and the higher the pressure in the colon, the greater the risk of forming diverticula.
Sonography of the abdomen was suggested for patients with suspicious diverticulitis because diverticula can be seen in up to 50% of cases.
Periampullary diverticula are found in 9-32% of patients who undergo ERCP [1, 3].
The other is diverticulz'to, which occurs when one or more diverticula become inflamed and, in rare cases, perforate.
Oesophageal diverticula presents with oropharyngeal dysphagia, usually to both solids and liquids, which is the most common symptom.
Because both tubular duplications and Meckel diverticula tend to communicate with the bowel lumen, they can appear quite similar radiographically.
A Diverticulosis is characterized by tiny sacs, called diverticula, that push against weak spots in the wall of the colon.
Diverticula are small pockets in the bowel that occur as we get older.