**Core Concept**
Littre's hernia is a rare type of hernia that involves the protrusion of a Meckel's diverticulum through a potential abdominal wall defect. It is a congenital anomaly that occurs when a segment of the vitelline duct fails to close during embryonic development.

**Why the Correct Answer is Right**
The correct answer involves the Meckel's diverticulum, which is a remnant of the vitelline duct that is present in approximately 2% of the population. In Littre's hernia, this diverticulum protrudes through the abdominal wall, often accompanied by a portion of the intestine. This condition can be asymptomatic or may present with symptoms such as abdominal pain, gastrointestinal bleeding, or obstruction.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not relate to the specific content of Littre's hernia. While a Meckel's diverticulum is a common feature of Littre's hernia, other structures such as the appendix or omentum may be involved in other types of hernias.
* **Option B:** This option is incorrect because it is a type of intestinal obstruction that occurs when a portion of the intestine is herniated through a defect in the abdominal wall. While it may be associated with Littre's hernia, it is not a content of the hernia itself.
* **Option C:** This option is incorrect because it is a type of hernia that occurs in the groin area, often involving the inguinal canal. It is not related to the content of Littre's hernia.

**Clinical Pearl / High-Yield Fact**
Littre's hernia is often associated with intestinal obstruction or gastrointestinal bleeding, and it may be difficult to diagnose due to its rarity. A high index of suspicion is necessary to diagnose this condition, and imaging studies such as CT scans or barium studies may be necessary to confirm the diagnosis.

**Correct Answer:** C.