释义 |
DictionarySeediverticulumEncyclopediaSeeDiverticulumpulsion 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.pul·sion di·ver·tic·u·luma diverticulum formed by pressure from within, frequently causing herniation of mucosa through the muscularis.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. |