Meckel's diverticulum is a remnant of the vitello-intestinal (omphalomesenteric) duct. It contains heterotopic gastric mucosa in approximately 50% of symptomatic cases. The RULE OF 2s for Meckel's diverticulum includes all EXCEPT:
- A 2 feet (60 cm) from the ileocaecal valve
- B 2 inches long
- C Presents before age 2 in 2 months of gestation origin ✓
- D 2% of the population affected
Correct answer: C. Presents before age 2 in 2 months of gestation origin
Explanation
The Rule of 2s for Meckel's diverticulum: 2% incidence, 2 feet (60 cm) proximal to ileocaecal valve, 2 inches long, 2 types of heterotopic mucosa (gastric and pancreatic), presents before age 2 years in symptomatic cases, and males to females ratio 2:1. 'Presents in 2 months of gestation origin' is not a rule of 2s component. It arises from incomplete obliteration of the vitello-intestinal duct at week 5–6 of embryonic development.
Reference: BD Chaurasia's Human Anatomy, 8th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.