PAEA Surgery End Of Rotation (EOR) Practice Exam

What does the "rule of 2's" describe regarding Meckel's diverticulum?

1. 2 inches long, 2 types of ectopic tissue

2. 2 feet from ileocecal valve, 2% of population

3. All of the above

4. 2 times as common in females

The correct answer is: All of the above

The "rule of 2's" pertains to Meckel's diverticulum and includes several key characteristics that help in its identification and understanding. First, Meckel's diverticulum is often located about 2 feet away from the ileocecal valve, which is significant in surgical considerations and in diagnosing conditions related to this diverticulum. This distance is an important landmark in both anatomical studies and surgical procedures involving the small intestine. Second, it is estimated that about 2% of the population is affected by Meckel's diverticulum, emphasizing its relative rarity yet importance in gastrointestinal pathology. This statistic is crucial for medical professionals to remember, as it helps in considering differential diagnoses when patients present with abdominal pain. Additionally, the "rule of 2's" also pertains to the commonly associated ectopic tissues found in Meckel's diverticulum, which may include gastric and pancreatic tissue. The mention of "2 types of ectopic tissue" highlights the potential complications that can arise, such as gastric acid secretion leading to ulceration in adjacent structures. Overall, this rule effectively summarizes essential clinical aspects of Meckel's diverticulum, covering its location, prevalence, and potential histological features, making it a valuable mnemonic for medical professionals.