## Core Concept
Adenocarcinoma of the small intestine is a rare malignancy, and its surgical management can vary depending on the tumor's location within the small intestine. The small intestine includes the duodenum, jejunum, and ileum, each with different surgical considerations.

## Why the Correct Answer is Right
The correct approach to managing adenocarcinoma of the small intestine indeed largely depends on the tumor's location. For instance:
- Tumors in the **duodenum** (the first part of the small intestine) may require a **Whipple procedure (pancreaticoduodenectomy)** if they are in the periampullary region or involve the duodenal wall significantly. This surgery involves removing the duodenum, part of the pancreas, and other nearby tissues.
- Tumors in the **jejunum** and **ileum** (the middle and end parts of the small intestine) are often managed with **segmental resection** of the intestine, which involves removing the part of the intestine containing the tumor and reconnecting the remaining intestine.

## Why Each Wrong Option is Incorrect
Without the specific details of options A, B, C, and D, it's challenging to directly address why each is incorrect. However, generally speaking:
- **Option A:** Could be incorrect if it suggests a uniform surgical approach for all small intestine adenocarcinomas regardless of location.
- **Option B:** Might be incorrect if it inaccurately describes the surgical management for a specific location within the small intestine.
- **Option C:** Could be incorrect if it overlooks the importance of tumor location in determining the surgical approach.
- **Option D:** May be incorrect if it proposes a surgical method that is not standard for adenocarcinoma of the small intestine.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the **Whipple procedure** is a critical surgical option for tumors located in the duodenum, especially those that are periampullary or involve the pancreatic head. This procedure is complex and requires careful patient selection and postoperative care.

## Correct Answer Line
**Correct Answer: D.**