All the following are true about Meckel’s diveiculum except-
**Core Concept**
Meckel's diverticulum is a congenital anomaly resulting from the incomplete obliteration of the vitelline duct, a remnant of the embryonic connection between the yolk sac and the intestinal tract. This condition is associated with a high risk of gastrointestinal bleeding, obstruction, and ectopic gastric or pancreatic tissue.
**Why the Correct Answer is Right**
The correct answer will be about a characteristic that does not apply to Meckel's diverticulum. The diverticulum contains ectopic gastric mucosa in approximately 50% of cases, which can lead to gastric acid secretion and subsequent gastrointestinal bleeding. The presence of ectopic pancreatic tissue is also possible, but less common. The diverticulum is usually located within 60 cm of the ileocecal junction and is often associated with a stalk or pedicle.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Meckel's diverticulum is indeed a true diverticulum, containing all layers of the intestinal wall. It is not a false diverticulum, which would only contain mucosa and submucosa.
**Option B:** This option is incorrect because the presence of ectopic gastric or pancreatic tissue is a hallmark of Meckel's diverticulum, not a characteristic that distinguishes it from other conditions.
**Option C:** This option is incorrect because Meckel's diverticulum can indeed cause gastrointestinal bleeding due to the presence of ectopic gastric mucosa.
**Clinical Pearl / High-Yield Fact**
A useful mnemonic to remember the complications of Meckel's diverticulum is "ABC": **A**cute gastrointestinal bleeding, **B**owel obstruction, and **C**ancer. This mnemonic can help you recall the potential consequences of this condition.
**Correct Answer: D.**