**Core Concept**
Intestinal lipomas are benign tumors composed of adipose tissue that can grow within the wall of the intestine. They can cause mechanical obstruction, intussusception, or bleeding, depending on their size and location. Intussusception is a condition where one segment of the intestine folds into another, often leading to bowel obstruction and ischemia.

**Why the Correct Answer is Right**
The correct answer is **C. Sessile lipomas**. Sessile lipomas are a type of intestinal lipoma that grows within the wall of the intestine, often causing intussusception due to their localized growth pattern and potential to entrap adjacent intestinal tissue. This type of lipoma is more likely to cause intussusception compared to other types, such as pedunculated lipomas, which tend to grow on a stalk and are less likely to cause intussusception.

**Why Each Wrong Option is Incorrect**
**Option A:** Pedunculated lipomas are a type of intestinal lipoma that grows on a stalk and are less likely to cause intussusception due to their pedunculated nature.
**Option B:** Lipoblastomas are rare, benign tumors of adipose tissue that are more common in children and are not typically associated with intussusception.
**Option D:** Liposarcomas are malignant tumors of adipose tissue that are more aggressive than lipomas and are not typically associated with intussusception.

**Clinical Pearl / High-Yield Fact**
When considering a patient with intussusception, it is essential to consider the possibility of an underlying intestinal lipoma, particularly a sessile type, which can lead to this condition.

**Correct Answer: C. Sessile lipomas**