Rule of 2s in Meckel diverticulum

The rule of 2s is a useful mnemonic for Meckel diverticulum.

Meckel diverticula:

  • occur in 2% of the population
  • are 2 inches (5 cm) long
  • are 2 feet (60 cm) from the ileocaecal valve
  • 2/3rds have ectopic mucosa
  • 2 types of ectopic tissue are commonly present (mostly gastric and pancreatic) 
  • and 2% become symptomatic
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Article information

rID: 37326
Section: Mnemonics
Synonyms or Alternate Spellings:
  • Rule of 2's in a Meckel diverticulum

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