| Mayer-Rokitansky-Kuster-Hauser syndrome | <syndrome> Primary amenorrhoea, absence of vagina, or presence of a short vaginal pouch, and absence of the uterus with normal karyotype and ovaries. Synonym: Rokitansky-Kuster-Hauser syndrome. (05 Mar 2000) |
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| rokitansky-aschoff sinuses | <radiology> Small outpouchings of gallbladder mucosa that extend through the muscularis layer, may be congenital, associated with adenomyomatosis of gallbladder (12 Dec 1998) |
| Rokitansky, Karl Freiherr von | <person> Austrian pathologist, 1804-1878. See: Rokitansky's disease, Rokitansky's hernia, Rokitansky-Aschoff sinuses, Mayer-Rokitansky-Kuster-Hauser syndrome. (05 Mar 2000) |
| Rokitansky-Kuster-Hauser syndrome | <syndrome> Primary amenorrhoea, absence of vagina, or presence of a short vaginal pouch, and absence of the uterus with normal karyotype and ovaries. Synonym: Rokitansky-Kuster-Hauser syndrome. (05 Mar 2000) |
| Rokitansky's disease | A lesion in which there is extensive and rapid death of parenchymal cells of the liver, sometimes with fatty degeneration of the size of the organ; the necrosis may result from fulminant viral infection or chemical poisoning; associated with jaundice. Synonym: acute parenchymatous hepatitis, Rokitansky's disease. (05 Mar 2000) |
| Rokitansky's hernia | A separation of the muscular fibres of the bowel allowing protrusion of a sac of the mucous membrane. (05 Mar 2000) |
| Rokitansky's pelvis | A pelvis whose brim is more or less occluded by a forward dislocation of the body of the lower lumbar vertebra. Synonym: Prague pelvis, Rokitansky's pelvis. (05 Mar 2000) |
| allantoenteric diverticulum | An endoderm-lined outpouching of the hindgut (in humans, the yolk sac of a very young embryo) representing the primordium of the allantois; in most amniotes, it grows into the extraembryonic celom; in humans, the distal part of the allantoic lumen is rudimentary, not extending beyond the body stalk. Synonym: allantoenteric diverticulum. (05 Mar 2000) |
| allantoic diverticulum | An endoderm-lined outpouching of the hindgut (in humans, the yolk sac of a very young embryo) representing the primordium of the allantois; in most amniotes, it grows into the extraembryonic celom; in humans, the distal part of the allantoic lumen is rudimentary, not extending beyond the body stalk. Synonym: allantoenteric diverticulum. (05 Mar 2000) |
| Rathke's 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) |
| ventricular diverticulum | A congenital outpouching of the right or left ventricle. (05 Mar 2000) |
| vesical diverticulum | A diverticulum of the bladder wall; may be either true or false type. (05 Mar 2000) |
| meckel diverticulum | <radiology> Rule of secondarys, 2 cm wide, 2 feet from I-C valve, males 2:1, 2% of population, antimesenteric (unlike duplication cyst), with or without ectopic gastric/pancreatic tissue see: Meckel scan (12 Dec 1998) |
| meckel's diverticulum | An out-pouching of the small bowel (ileum). Present in about 2% of people and usually occurs about 2 feet before the junction with the colon. Can be lined by stomach-type mucosa and ulcerate, perforate, or cause small bowel obstruction. (12 Dec 1998) |
| cervical diverticulum | A diverticulum in the neck derived from retention of part of one of the pharyngeal pouches (endodermal) or branchial grooves (ectodermal) of the embryo. (05 Mar 2000) |