Meckel’s diverticulum true is
**Core Concept**
Meckel's diverticulum is a congenital anomaly resulting from the incomplete closure of the vitelline duct, a communication between the yolk sac and the gastrointestinal tract. This condition is a type of omphalomesenteric duct remnant and can lead to various complications, including intestinal obstruction, bleeding, and diverticulitis.
**Why the Correct Answer is Right**
Meckel's diverticulum is a true diverticulum, meaning it contains all layers of the intestinal wall, including the mucosa, submucosa, muscularis, and serosa. This is in contrast to false diverticula, which are outpouchings of the intestinal wall that do not contain all layers. The presence of gastric or pancreatic tissue within the diverticulum can lead to complications such as bleeding due to acid production by gastric mucosa.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Meckel's diverticulum is not a type of intussusception, which involves the telescoping of one portion of the intestine into another.
**Option B:** This option is incorrect because Meckel's diverticulum is not a type of appendicitis, although it can present with similar symptoms.
**Option C:** This option is incorrect because Meckel's diverticulum is not a type of hernia, although it can be associated with hernias in some cases.
**Clinical Pearl / High-Yield Fact**
The most common complication of Meckel's diverticulum is gastrointestinal bleeding, often presenting as painless rectal bleeding. The bleeding can be due to the presence of gastric mucosa within the diverticulum.
**Correct Answer: D. Meckel's diverticulum is a true diverticulum containing all layers of the intestinal wall.**