Meckel's Diverticulum

Pancreatic, jejunal, colonic and gastric.

What are the 4 types of mucosa that may be found in a Meckel's?

Asymptomatic, haemorrhage, obstruction, diverticulitis or perforation.

What are the 5 presentations of Meckel's?

Gastric mucosa, which secretes HCl.

What do 50% of Meckel's contain and what does this do?

Bright red blood in stools.

What does a patient with haemorrhaging Meckel's present with?

Congenital vestigial remnant of the vitellointestinal duct.

What is a Meckel's diverticulum?

4-6%

What is the lifetime risk of complication of an asymptomatic Meckel's?

Distal ileum, within 100cm of the ileocaecal valve.

Where is a Meckel's diverticulum?

Has affinity for a gastric mucosa.

Why do we administer 99mTc pertechnetate?

Gamma camera scan after administration of 99mTc pertechnetate.

How do you visualise a Meckel's?

Abdo pain, vomiting and constipation.

Give 3 symptoms that patients present with if they have a Meckel's obstruction.

2-3%

What percentage of the population has a Meckel's diverticulum?

25-50%

Haemorrhage accounts for what percentage of complications?

Less than 2 years old.

Haemorrhage as a complication is most common in what age group?

Fibrous bands may attach the Meckel's to the wall causing a volvulus, or obstruction by intussusception.

How does obstruction occur in Meckel's diverticulum?

3-6cm

How long is the Meckel's pouch?

Anti-mesenteric.

On which border is the Meckel's always found?