Analysis of No.12b Lymph Node Dissection for 60 Cases of Advanced Distal Gastric Cancer Accepting D_2 Lymphadenectomy

Objective To study the necessity and feasibility of No.12b lymph node dissection in D2 lymphadenectomy for advanced distal gastric cancer,and the relation between No.12b lymph node metastasis and clinicopathologic factors.Methods Clinical data of sixty cases of advanced distal gastric cancer receiving D2 or D2+ radical correction were collected retrospectively,both of which were all plus No.12b lymph node dissections.The relationships between No.12b lymph node metastasis and clinicopathologic factors were analyzed.Results No death attributed to operation or severe operative complications were found.There were 12 cases(20.00%) with No.12b lymph node metastasis.The rates of No.12b lymph node metastasis in Borrmann Ⅲ-Ⅳ types,N2-3 of lymph node metastasis and T3-4 of tumor infiltration were 31.25%(10/32),30.30%(10/33) and 29.73%(11/37),which were significantly higher than those in Borrmann Ⅰ-Ⅱ types(7.14%(2/28)),N0-1(7.41%(2/27)) and T1-2(4.35%(1/23)) respectively(P0.05).There was no relationship between tumor size and No.12b lymph node metastasis.Conclusions No.12b lymph node dissection is safe and feasible for advanced distal gastric cancer.Further perspective studies on No.12b lymph node dissection influence on prognosis in more cases are required.