Diverticulum common birth defect in about 2% of all infants

MECKLE'S DIVERTICULUM  The vitello-intestinal funiculus is the remnant of the yolk cover which is attached to the primitive midgut in the first some weeks of embryonic development .

It was first described by FABRICIUS HILDANUS in the sixteenth century and later named after Jhann friedrich meckle , who described the embryological origin of this type of diverticulum in 1809.

It should completely obliterate during the six week ,but haw persist completely or in conception .if it persist completely , there is a diverticulum ,the Meckle's diverticulum ,which arises from the terminal ileum .The classical description in adults is that it is present in 2% of he population , is 2 inches ( 5 cm ) daylong and 2 feet (60 cm )from the ileocaecal valve .

The diverticulum is usually supplied by the omphalomesenteric artery (a remnant of the vitelline artery), which arises from the ileal branch of the superior mesenteric artery. Usually, the artery terminates in the diverticulum; however, it has been reported to continue up to the abdominal wall in some cases. Rarely, these blood vessels persist in the form of fibrous remnants that run between the Meckel diverticulum and the abdominal wall or small bowel mesentery.

Meckel's diverticulum occurs on the antimesenteric abut of the ileum, commonly 40-60 cm proximal to the ileocecal valve. On average, the diverticulum is 3 cm long and 2 cm wide. Slightly more than one half include ectopic mucosa. Meckel diverticulum is typically lined by ileal mucosa, but another paper types are also institute with varied frequency.

The heterotopic membrane is most commonly gastric. This is important because peptic ulceration of this or conterminous membrane can lead to painless bleeding, perforation, or both. In one study, heterotropic viscus membrane was institute in 62% of cases, pancreatic paper was institute in 6%, both pancreatic paper and viscus membrane were institute in 5%, jejunal membrane was institute in 2%, Brunner paper was institute in 2% and both viscus and duodenal membrane were institute in 2%.2 Rarely, colonic, rectal, endometrial, and hepatobiliary tissues have been noted.

A persistent vitello-intestinal funiculus can present at birth , as a swelling at the base of the umbilical cord ,or as a fistulous connection to the umblicus ,or as an umblical polyp, which does not move like simple granulation tissue to cautery , because it has a mucosal surface , Surgical excision is required .It haw be lined by ileal membrane ,or contain ectopic gastric membrane ,which haw unergo peptic lesion with ensuant bleeding .

Most people who have a Meckel's diverticulum have no symptoms or problems. Only about 1 in 25 persons who are born with it will have problems. These problems vary by age. In infants and children, the problem is commonly injury from the rectum. Sometimes blood stained stool can be seen .

In adults, the gut may become blocked. If this happens, the mortal may have breadbasket pain and vomiting. Other symptoms allow fever, degradation and swelling of the stomach.

It haw present with

SEVERE HAEMORRHAGE blood is passed per rectum , and is blakish red in colouration.


INTUSSUSCEPTION ,MECKALIAN DIVERTICULITIS ( Without Perforation ) clinical features simulate those of acute appendicitis ,(With Perforation ) clical features simulate those of cut ulcer  .

CHRONIC PEPTIC ULCERATION symptomatic peptic ulcer pain , related to meals , but is felt around the umblicus ( because diverticulum is conception of midgut ).


INTESTINAL OBSTRUCTION a adornment present between apex of diverticulum and umblicus , haw cause obstruction either by adornment itself or by a volvulus around it .


LITTER's HERNIA meckle's diverticulum is found in an inguinal or femoral hernial cover .


SILENT MECKLE's DIVERTICULUM encouraged in barium meal follow-through or during an abdominal operation . 

DIAGNOSTIC INVESTIGATIONS 1 . X-RAY with BARIUM MEAL  may demonstrate Meckle's diverticlum  ,and failure to visualize is of no significance ,because so often the entrance of diverticulum is blocked by edema .

TECHNETIUM (Tc ) SCANNING may localize heterotopic gastric mucosa in a diverticulum .There is no definitive scan or investigation to confirm the existence of a Meckle's diverticulum .A radiolabelled technetium  scan looking for ectopic gastric mucosa ( that is outside the stomach ) is only positive in about 70 % of patients with a Meckle's diverticulum who present with rectal bleeding .

TREATMENT : management is by excision after the diagnosis has been made - which is often only at laparotomy , although it may be suspected beforehand.

MECKELIAN DIVERTICULECTOMY a broad base Meckle's diverticulum is resected with invagination technique in the same way as a vermiform appendix ,If the base of Meckle's diverticulum is indurated  and especially .when such induration  extends into neighboring ileum ,resect a short segment  of ileum containing the Meckle's diverticulum ,and restore the continuity of bowel by end-to-end anastomosis .

FREQUENCY

The figure of Meckel diverticulum is usually noted to be approximately 2% of the population,3 but publicised program arrange from 0.2-4%.4 Complications are only seen in about 5% of those with the anomaly.