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Omphalomesenteric duct cysts (ODC), also known as an omphalomesenteric duct remnant or vitelline cyst, are developmental defects relating to the closure of the omphalomesenteric duct. It usually disintegrates within six weeks of gestation, but remnants of the cyst can sometimes be found along the intestines or umbilicus .
In the human embryo, the vitelline duct, also known as the vitellointestinal duct, [1] the yolk stalk, [1] the omphaloenteric duct, [1] or the omphalomesenteric duct, [1] is a long narrow tube that joins the yolk sac to the midgut lumen of the developing fetus. [2]
A Meckel's diverticulum, a true congenital diverticulum, is a slight bulge in the small intestine present at birth and a vestigial remnant of the vitelline duct.It is the most common malformation of the gastrointestinal tract and is present in approximately 2% of the population, [1] with males more frequently experiencing symptoms.
The yolk sac is a membranous sac attached to an embryo, formed by cells of the hypoblast layer of the bilaminar embryonic disc.This is alternatively called the umbilical vesicle by the Terminologia Embryologica (TE), though yolk sac is far more widely used.
Vitelline circulation, the system of blood flowing between an embryo and its yolk sac; Vitelline cyst, a developmental defect relating to the closure of the vitelline duct; Vitelline duct, a tube that joins the yolk sac to the midgut lumen of a human embryo; Vitelline membrane, membrane surrounding an ovum
The allantois (/ ə ˈ l æ n t oʊ ɪ s / a-LAN-toe-iss; [1] pl.: allantoides or allantoises) is one the extraembryonic membranes arising from the yolk sac.It is a hollow sac-like structure filled with clear fluid that forms part of the developing conceptus in an amniote that helps the embryo exchange gases and handle liquid waste.
Urachal cyst: there is no longer a connection between the bladder and the umbilicus, however a fluid filled cavity with uroepithelium lining persists between these two structures. Urachal fistula: there is free communication between the bladder and umbilicus; Urachal diverticulum (vesicourachal diverticulum): the bladder exhibits outpouching [5]
Medical imaging, such as abdominal ultrasound, may be used to distinguish a Sister Mary Joseph nodule from another kind of mass. [ 2 ] Gastrointestinal malignancies account for about half of underlying sources (most commonly gastric cancer , colonic cancer or pancreatic cancer , mostly of the tail and body of the pancreas [ 3 ] ), and men are ...