Master Meckel's Diverticulum with Picmonic for Medicine

True diverticulum in the gastrointestinal tract is an outpouching that is lined by mucosa, communicates with the lumen, and includes all three layers of bowel wall.

Meckel's diverticulum occurs due to failed involution of the vitelline duct, which is the structure that connects the lumen of the developing gut to the yolk sac.

Meckel's diverticulum occurs due to failed involution of the vitelline duct, which is the structure that connects the lumen of the developing gut to the yolk sac. The vitelline duct is also commonly referred to as the yolk stalk.

The mucosal lining of Meckel's diverticulum can contain ectopic pancreatic or gastric tissue.

The mucosal lining of Meckel's diverticulum can contain ectopic pancreatic or gastric tissue. Secretion of alkaline pancreatic fluid can lead to ulceration of adjacent mucosa and lead to ulcers and presence of gastric tissue can cause peptic ulceration of adjacent small intestinal mucosa due to hydrochloric acid production and cause occult bleeding or abdominal pain.

Presence of ectopic pancreatic or gastric tissue can lead to ulceration in the ileal mucosa and cause pain, bleeding or perforation with frank hemorrhage.

Intussusception is a condition in which a part of the intestine invaginates into another section, similar to how a telescope collapses. Meckel's diverticulum can be a nidus for intussusception formation.

A volvulus is a form of bowel obstruction in which a loop of bowel has abnormally twisted on itself. Meckel's diverticulum can be a nidus for volvulus formation.

Meckel's diverticulum are generally present within 2 feet of the ileocecal valve. This is part of the rule of 2s.

Meckel's diverticulum are approximately 2 inches long. This is part of the rule of 2s.

Meckel's diverticulum generally occurs in 2% of the population. This is part of the rule of 2s.

Meckel's diverticulum are most often symptomatic by age 2. This is part of the rule of 2s.

This scan is used to detect the presence of gastric mucosa and can be used to diagnose Meckel's diverticulum.