Meckels diverticulum all is true except-
Ans. is 'b' i.e., Remanent of urachal cystMeckel's diverticulum is situated at the anti-mesenteric border of small intestine,o Meckel'S diverticulum is a true diverticulum as it has all the 3 layers of the intestine,o It s the most common congenital anomaly of the gastrointestinal tract,o Male to female ratio is 3 :2.o Approximately 60% of Meckel 's diverticula contain heterotopic mucosa, of which more than 60% consists of gastric mucosa. Second most common ectopic mucosa is that of Pancreas (Pancreatic acini). Other mucosa are - colonic mucosa, Brunner's gland, pancreatic islets, endometriosis and hepatobiliary tissue,o A useful but crude Mnemonic used traditionally for describing Meckel's diverticula isRule of two : i.e.2% prevalence2 inch in length2 feet proximal to ileocecal valve.Half of these who are symptomatic are younger than 2 yrs of ageo Meckel's diverticula are asymptomatic. Symptoms arise only when any complication occurs.o Complicationso Most common complication* In children & young adults (< 18 yrs of age)-bleeding* In adults-intestinal obstruction* Overall-bleedingo Following complications are noted in Meckel's diverticulum.BleedingBleeding in Meckel's diverticulum is usually the result of ulceration in ileal mucosa adjacent to the diverticulum caused by the acid secreted by heterotopic gastric mucosa within the diverticulum.Intestinal obstructionIntestinal obstruction associated with Meckel's diverticulum can result from several mechanisms.Volvulus of the intestine around the fibrous band attaching the diverticulum to the umbilicusIntussusception with the diverticulum acting as the lead point.Entrapment of intestine by a mesodiverticuiar band (Mesodiverticular band is a remnant of left vitelline artery, it tethers the Meckel's diverticulum to the ileal mesentry).d) Stricture secondary to chronic diverticulitis.3) DiverticulitisClinical picture is similar to appendicitis.Diverticulitis may lead to perforation.o Littre's hernia -Rarely Meckel's diverticulum is found in inguinal or femoral hernia. This is known as Littres hernia.o Diagnostic studiesMeekers diverticulum in the absence of bleeding can be rarely diagnosed before surgical intervention.Barium meal follow through can rarely demonstrate the diverticulum. Barium enteroclysis can demonstrate the diverticula in 75% of cases but is avoided during acute presentation of complication.If repeated episodes of lower GI bleed occur and an ectopic gastric mucosa in the Meckel's diverticulum is suspected, it can be demonstrated by Technetium(tm)pertechnate radionuclide scan. It demonstrates the ectopic gastric mucosa and localizes the Meckel's diverticulum. Angiography can localize the site of bleeding during acute hemorrhage related to meckel's diverticula.
It contains all layers
Remanent of urachal cyst
Heterotopic epithelium in 50-60% cases
May present with hemorrhage
Small Intestine - Congenital Abnormalities