Which is not associated with vitello-intestinal duct:
**Core Concept**
The vitello-intestinal duct is a developmental structure that connects the yolk sac to the intestinal tract during embryonic development. Failure of this duct to close can lead to various anomalies, including Meckel's diverticulum, a congenital defect characterized by the presence of ectopic pancreatic or gastric tissue within the intestinal wall.
**Why the Correct Answer is Right**
Meckel's diverticulum is a classic association with the vitello-intestinal duct, resulting from incomplete closure of the duct during embryonic development. This condition often presents with symptoms such as gastrointestinal bleeding, abdominal pain, or intestinal obstruction.
**Why Each Wrong Option is Incorrect**
**Option A:** Omphalocele is not directly associated with the vitello-intestinal duct, as it involves a herniation of abdominal contents through the umbilical ring, typically due to a defect in the navel.
**Option B:** Gastrointestinal bleeding in Meckel's diverticulum is often due to the presence of ectopic gastric or pancreatic tissue, which secretes acid or digestive enzymes, leading to mucosal ulceration.
**Option C:** Intussusception is a condition where a part of the intestine folds into the adjacent part, leading to bowel obstruction. While it can occur in any age group, it is not a direct consequence of vitello-intestinal duct anomalies.
**Clinical Pearl / High-Yield Fact**
Meckel's diverticulum is often found incidentally during imaging studies or surgeries for unrelated conditions, highlighting the importance of considering this anomaly in the differential diagnosis of gastrointestinal bleeding or abdominal pain in young patients.
**Correct Answer:** None