Also found in: Dictionary, Thesaurus, Encyclopedia.
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.
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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
a diverticulum formed by pressure from within, frequently causing herniation of mucosa through the muscularis.
Farlex Partner Medical Dictionary © Farlex 2012
pul·sion di·ver·tic·u·lum(pŭl'shŭn dī'vĕr-tik'yū-lŭm)
A pouch formed by pressure from within, frequently causing herniation of mucosa through the muscularis.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012