**Core Concept**
Small bowel lymphoma is a type of non-Hodgkin lymphoma (NHL) that arises from the lymphoid cells in the small intestine. It is a rare but aggressive form of cancer that can cause abdominal pain, weight loss, and intestinal obstruction.

**Why the Correct Answer is Right**
The correct answer will highlight a characteristic that is not true about small bowel lymphoma. Small bowel lymphoma is often associated with immunodeficiency states, such as HIV/AIDS or chronic immunosuppression, which can increase the risk of developing this type of cancer. The most common type of lymphoma in the small bowel is diffuse large B-cell lymphoma (DLBCL), followed by mantle cell lymphoma and follicular lymphoma.

**Why Each Wrong Option is Incorrect**
**Option A:** Small bowel lymphoma is more common in the jejunum than in the ileum. This statement is incorrect because small bowel lymphoma can occur in any part of the small intestine, but it is more commonly found in the ileum.

**Option B:** Small bowel lymphoma is typically treated with surgical resection alone. This statement is incorrect because small bowel lymphoma is often treated with a combination of chemotherapy, radiation therapy, and surgery, depending on the stage and type of lymphoma.

**Option C:** Small bowel lymphoma is associated with a high risk of perforation. This statement is incorrect because while small bowel lymphoma can cause intestinal obstruction and other complications, perforation is not a characteristic feature of this disease.

**Option D:** Small bowel lymphoma is more common in patients with a history of celiac disease. This statement is incorrect because while there is an association between celiac disease and an increased risk of lymphoma, the relationship is not as strong as it is for other types of cancer, such as gastric carcinoma.

**Clinical Pearl / High-Yield Fact**
One important point to remember is that small bowel lymphoma can present with non-specific symptoms, such as abdominal pain and weight loss, making it difficult to diagnose. A high index of suspicion and appropriate diagnostic tests, such as endoscopy and biopsy, are necessary to make an accurate diagnosis.

**Correct Answer: A. Small bowel lymphoma is more common in the jejunum than in the ileum.