| pituitary diverticulum | A tubular outgrowth of ectoderm from the stomodeum of the embryo; it grows dorsad toward the infundibular process of the diencephalon, around which it forms a cup-like mass, giving rise to the pars distalis and pars juxtaneuralis of the hypophysis. Synonym: craniopharyngeal canal, hypophyseal pouch, Rathke's diverticulum, Rathke's pocket, Rathke's pouch. (05 Mar 2000) |
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| Heister's diverticulum | <anatomy, vein> One of two dilated parts of the internal jugular vein: the superior bulb (Heister's diverticulum) is a dilation at the beginning of the internal jugular vein in the jugular fossa of the temporal bone; the inferior bulb is a dilat ed portion of the vein just before it reaches the brachiocephalic vein. Synonym: jugular bulb, bulbus venae jugularis. (05 Mar 2000) |
| pulsion diverticulum | A diverticulum formed by pressure from within, frequently causing herniation of mucosa through the muscularis. (05 Mar 2000) |
| hutch bladder diverticulum | <radiology> Bladder tic near uretero-vesical junction, weakens detrusor muscle, may lead to VU reflux (12 Dec 1998) |
| hypopharyngeal diverticulum | Most common diverticulum of the oesophagus; arises between the inferior pharyngeal constrictor and the crico-pharyngeus muscle. Synonym: hypopharyngeal diverticulum, Zenker's diverticulum. (05 Mar 2000) |
| stomach diverticulum | Saccular, outward protrusion of a portion of the mucous membrane of the stomach wall. (12 Dec 1998) |
| Nuck's diverticulum | A peritoneal diverticulum in the embryonic lower anterior abdominal wall that traverses the inguinal canal; in the male it forms the tunica vaginalis testis and normally loses its connection with the peritoneal cavity; a persistent processus vaginalis in the female is known as the canal of Nuck. Synonym: Nuck's diverticulum, processus vaginalis peritonei, vaginal process of peritoneum, vaginal process of testis. (05 Mar 2000) |
| diverticulum | <anatomy, surgery> A small sac-like structure that sometimes forms in the walls of the intestines, diverticula can trap particles of food (especially small seeds and undigested grains) and become very inflammed and painful (this condition is called diverticulitis). (09 Oct 1997) |
| duodenal diverticulum | A diverticulum of the duodenum, often of large size, that is occasionally found projecting from the duodenum near the duodenal papilla. (05 Mar 2000) |
| oesophageal diverticulum | Saccular, outward protrusion of all or a portion of the oesophageal wall from the lumen of the oesophagus. (12 Dec 1998) |
| thyroid diverticulum | Thyroglossal diverticulum, the endodermal bud from the floor of the embryonic pharynx; the primordium of the parenchyma of the thyroid gland. (05 Mar 2000) |
| tracheobronchial diverticulum | The endodermal lung primordium which will give rise to the epithelial lining of the respiratory tract. Synonym: lung bud. (05 Mar 2000) |
| traction diverticulum | A diverticulum formed by the pulling force of contracting bands of adhesion, occurring mainly in the distal oesophagus, from tuberculous hilar or mediastinal lymphadenitis. (05 Mar 2000) |
| epiphrenic diverticulum | A diverticulum which originates just above the cardioesophageal junction and usually protrudes to the right side of the lower meadiastinum. (05 Mar 2000) |
| true diverticulum | A term denoting a diverticulum that includes all the layers of the wall from which it protrudes. (05 Mar 2000) |