Meckel's Diverticulum
Congenital small bowel outpouching that may cause bleeding, obstruction, or inflammation.
Full Definition
Meckel's diverticulum is the most common congenital anomaly of the small intestine, occurring as a remnant of the omphalomesenteric duct. Located on the antimesenteric border of the ileum, it follows the 'rule of 2s': occurs in 2% of the population, typically within 2 feet of the ileocecal valve, and measures about 2 inches long. Complications include gastrointestinal bleeding (often from ectopic gastric mucosa), intestinal obstruction, and diverticulitis. Surgical removal is indicated for symptomatic cases.
Usage
Usage note: Use possessive form (Meckel's); distinguish from acquired diverticular disease.
In Context
- "Technetium scan revealed a Meckel's diverticulum with ectopic gastric mucosa." — Nuclear medicine report
- "The patient underwent laparoscopic diverticulectomy for symptomatic Meckel's diverticulum." — Surgical procedure note