traction diverticulum


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Related to traction diverticulum: epiphrenic diverticulum, pulsion diverticulum, Zenker diverticulum

diverticulum

 [di″ver-tik´u-lum] (pl. diverti´cula) (L.)
a circumscribed pouch or sac occurring normally or created by herniation of the lining mucous membrane through a defect in the muscular coat of a tubular organ. See illustration.
Intestinal diverticula. From Dorland's, 2000.
ileal diverticulum Meckel's diverticulum.
intestinal diverticulum a pouch or sac formed by hernial protrusion of the mucous membrane through a defect in the muscular coat of the intestine.
Meckel's diverticulum an occasional sacculation or appendage of the ileum, derived from an unobliterated yolk stalk.
pressure diverticulum (pulsion diverticulum) a sac or pouch formed by hernial protrusion of the mucous membrane through the muscular coat of the esophagus or colon as a result of pressure from within.
traction diverticulum a localized distortion, angulation, or funnel-shaped bulging of the esophageal wall, due to adhesions resulting from an external lesion.

trac·tion di·ver·tic·u·lum

a diverticulum formed by the pulling force of contracting bands of adhesion, occurring mainly in the distal esophagus, from tuberculous hilar or mediastinal lymphadenitis.

trac·tion di·ver·tic·u·lum

(trak'shŭn dī'vĕr-tik'yū-lŭm)
A diverticulum formed by the pulling force of contracting bands of adhesion, occurring mainly in the distal esophagus, from tuberculous hilar or mediastinal lymphadenitis.

diverticulum

pl. diverticula [L.] a circumscribed pouch or sac occurring normally or created by herniation of the lining mucous membrane through a defect in the muscular coat of a tubular organ.

auditory tube diverticulum
dorsal urethra diverticulum
a small pouch dorsal to the urethra in the male ruminant.
esophageal diverticulum
a congenital or acquired localized dilatation or outpouching of the esophageal wall in which food and liquids may accumulate. Pulsion (or pressure) diverticula result from increased intraluminal pressure and protrusion of mucosa through the muscular wall. Traction diverticula are created by periesophageal inflammation, fibrosis and adhesions to surrounding structures. Vascular ring anomalies are a common cause of anterior thoracic esophageal diverticula in dogs. Epiphrenic are those located between the heart base and diaphragm.
Clinical signs include dysphagia and regurgitation, and esophageal obstruction by impacted food may occur.
intestinal diverticulum
a pouch or sac formed by hernial protrusion of the mucous membrane through a defect in the muscular coat of the intestine.
nasal diverticulum
the part of the horse's nostril dorsal to the alar fold leads into this blind pouch, which is lined with skin. Called also false nostril.
pressure diverticulum
see esophageal diverticulum (above).
pulsion diverticulum
see esophageal diverticulum (above).
rectal diverticulum
weakness and rupture of the muscular layer of the rectal wall allows formation of a pocket. Most commonly seen in dogs in association with perineal hernia. There is straining and an obvious bulge beside the anus.
stomach diverticulum
a small pouch at the left end of the pig's stomach, close to the esophageal entry into the stomach.
suburethral diverticulum
lies below the opening of the urethra of the cow.
traction diverticulum
see esophageal diverticulum (above).
diverticulum tubae auditivae