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An abnormal outpocketing or sac on the wall of a hollow organ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Trends in hospitalization for diverticulitis and diverticular bleeding in the United States from 2000 to 2010.
Spectrum of disease and outcome of complicated diverticular disease.
Overall, DD developed in 6 patients (4.2%): 4 patients developed acute diverticulitis (2.8%), 1 (0.7%) had possible diverticular bleeding and one patient (0.7%) had both diverticular bleeding and acute diverticulitis.
Bradburn, "Diet, ageing and genetic factors in the pathogenesis of diverticular disease," World Journal of Gastroenterology, vol.
Una presentacion poco comun es el diverticulo colonico gigante, el cual se asocia a enfermedad diverticular en el 85% de los casos como se evidencia en el paciente numero dos, aunque tambien pueden presentarse de manera aislada en un 15% como en el paciente numero uno (7,9).
It is predictable that as the population ages, the incidence of right-sided diverticular disease will increase and will result in more presentations of acute right-sided diverticulitis to the emergency department.
Following initial identification, a CT scan of the abdomen obtained showed pan colonic diverticulosis with a terminal ileal collection concerning diverticular phlegmon associated with extensive superior mesenteric vein thrombosis concerning an infected thrombophlebitis.
The sigmoid colectomy specimen showed gross diverticular disease with a mural abscess.
Researchers looked at 46,461 male health professionals without diverticular disease at baseline.
Bowel resection may be performed to treat gastrointestinal cancer, bowel necrosis, severe enteritis, diverticular disease, Crohn's disease, endometriosis, ulcerative colitis, or, like Sarah, bowel obstruction due to scar tissue.