Meckel Diverticulum — RACP Paediatrics MCQ

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ModerateGastroenterologyMeckel DiverticulumRACP Paediatrics

A 6-year-old presents with intermittent painless rectal bleeding. A Meckel scan (technetium-99m pertechnetate) is positive. What type of ectopic tissue is most commonly found in a Meckel diverticulum that causes bleeding?

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Correct answer: C — Gastric mucosa

Meckel diverticulum is the most common congenital GI anomaly (rule of 2s: 2% of population, 2 feet from ileocaecal valve, 2 inches long). Heterotopic gastric mucosa produces acid causing ulceration and painless rectal bleeding. Technetium-99m pertechnetate scan detects gastric mucosa.

Reference: RCH Melbourne – 2024 – Clinical Practice Guidelines: Meckel Diverticulum