is derived from an abnormal persistence of the proximal part of the
It is situated 80cm
proximal to the ileocaecal junction on the antimesenteric border.
is a small pouch or a blind segment
which varies in length from less than 1cm to 8cm, and lumen diameter is
greater than that of the ileum.
This is a true
diverticulum containing all three layers of the bowel wall (mucosa,
submucosa and muscularis propra).
normal small intestinal mucosa.Often heterotopic rests of gastric and
colonic mucosa or pancreatic tissue may be present.
Complications of Meckel's
(peptic ulceration occurs in the ileum adjacent to the heterotopic gastric
(painless bleeding is common symptom in diverticulitis).
obstruction from attached bands and tumours.
8) Carcinoid tumours
have been often reported.
9) Other tumours
arising in Meckel's diverticulum include - adenocarcinoma, villous adenoma, leiomyoma, leiomyosarcoma, malignat melanoma.