[Optimal Lymph Node Dissection and Prognosis for Primary Small Bowel Adenocarcinoma]

Primary small bowel adenocarcinoma(PSBA)is one of rare cancer, and the treatment method is not established. We analyzed 18 patients with PSBA in our hospital retrospectively, especially extent of lymph node dissection, effectiveness of treatment, prognosis. There are 11 cases of jejunal adenocarcinoma and 7 of ileal adenocarcinoma. Thirteen patients underwent surgical resection and lymph node dissection was performed for 10 patients. There is no metastasis of main lymph nodes. Peri-intestinal and intermediate nodes have high efficacy of lymphadenectomy from analysis of lymphadenectomy index. Peritoneum is the most common site of recurrence and metastasis. Some Stage Ⅳ patients with surgical resection and chemotherapy survived more than 5 years. It was assumed that the combination of resection of the primary tumor and metastatic treatment would improve the prognosis.