早期胃癌临床病理因素与淋巴结转移规律

Correlation between clinicopathologic features and lymph node metastasis in patient with early gastric cancer

目的探讨早期胃癌患者淋巴结转移规律,为临床制定合理的治疗方案提供依据。方法回顾性分析四川大学华西医院胃肠外科中心2011年1月至2012年12月期间诊治的101例早期胃癌患者的临床病理资料,分析其临床病理因素与淋巴结转移的关系及早期胃癌淋巴结转移的范围。结果 101例早期胃癌患者中有28(27.7%)例发生淋巴结转移,单因素分析结果显示,早期胃癌的淋巴结转移与肿瘤的大体类型为凹陷型(P=0.013)、侵及黏膜下层(P<0.001)及组织分化不佳型(包括黏液腺癌、印戒细胞癌、低分化癌,P=0.044)及有脉管侵犯(P=0.020)有关;多因素logistic回归分析结果显示,肿瘤的大体类型(RR=4.742,P=0.009)、分化类型(RR=6.369,P=0.011)及浸润深度(RR=15.218,P<0.001)为淋巴结转移的独立危险因素。存在淋巴结转移的28例患者中,有14例患者只有1枚淋巴结转移,有4例患者存在7枚以上淋巴结转移。其中,第6组淋巴结受累最多(10例)。19例患者淋巴结转移局限于D1站范围内,3例患者在无胃周淋巴结转移的情况下出现了第8a组或第9组淋巴结转移。结论早期胃癌患者的多个临床病理特征与其淋巴结转移有关,深入研究并在术前综合评估影响早期胃癌患者淋巴结转移的各临床病理因素,可以为早期胃癌的治疗方案选择提供指导。

Objective To investigate pattern of lymph node metastasis （LNM） in patient with early gastric cancer （EGC） and it＇s relation to clinicopathologic features so as to providing evidence for proper clinical management for EGC. Method The clinical and pathologic data of 101 EGC patients who were diagnosed and treated in the West China Hospital of Sichuan University from January 2011 to December 2012 were retrospectively analyzed. Results The LNM was found in the 28 patients, the rate of the LNM was 27.7% （28/101）. In the univariate analysis, the LNM was associated with the macroscopic type （P=0.013）, depth of invasion （P〈0.001）, differentiation type （P=0.044）, and lymphovascular invasion （P=0.020）; In the multivariate logistic regression analysis, the factors including of the macroscopic type （RR=4.742, P=0.009）, differentiation type （RR=6.369, P=0.011）, and depth of invasion （RR=15.218, P〈0.001） were the independent risk factors for the LNM. Twenty-eight patients with LNM had only 1 positive lymph node, 4 patients had more than 7 positive lymph nodes. The No.6 lymph node was the most frequently involved station （35.7%, 10/28）. The LNMs in the 69.7% （19/28） patients were restricted in the extent of the D1 lymphadenectomy, 3 （10.7%） patients without the perigastric lymph node involvement had the No.8a or No.9 LNM. Conclusion LNM in patient with EGC is correlated with clinicopathologic features such as macroscopic type, depth of invasion, differentiation type, and lymphovascular, further investigation is warranted to clarify risk factors of LNM in patient with EGC.