首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 577 毫秒
1.
目的 分析进展期胃癌腹主动脉旁淋巴结转移规律,评价该区域淋巴结清扫对临床结局的影响。方法 根据1994—2004年胃癌数据库资料,按1999年日本第13版胃癌规约的淋巴结清扫分类,行D3或D3^+淋巴结清扫(D3组)共126例,分析其淋巴结转移的规律。从同一数据库中选择同一手术组施行D2手术的患者146例(D2组),对两组患者的临床结局进行比较。结果 16a2区及16b1区是No16淋巴结转移常见部位。腹主动脉周围淋巴结转移率T1为3、8%,T2为22、3%,T3为46.8%,T4为32.1%;腹膜播散阴性者其转移率为16、3%,腹膜播散阳性者则为69、5%;浆膜无侵犯者转移率为16.3%,浆膜侵出阳性者则为69.5%。D2和D3组患者手术死亡各2例,并分别有4例和6例出现并发症(P〉0、05)。D3组No16淋巴结转移3枚以下与4枚以上者与D2清扫组的平均生存期、中位生存及生存率比较,差异均有统计学意义(P〈0.01);胃癌D3与D2手术后Ⅰ期、Ⅱ期、Ⅲ。期、Ⅲb期、Ⅳ期患者平均生存期、中位生存及生存率曲线比较,差异均有统计学意义(P〈0.01)。结论 胃癌淋巴结转移率与肿瘤侵犯深度和浆膜侵出程度密切相关。腹主动脉周围淋巴结清扫可以提高No16转移淋巴结在3枚以内和阴性患者的5年生存率。  相似文献   

2.
θ���ٴ������������ܰͽ�ת�ƹ�ϵ�о�   总被引:11,自引:1,他引:10  
目的 探讨胃癌临床病理特征与淋巴结转移的关系,为临床进行合理的淋巴结清扫范围提供依据。方法 统计1200例胃癌标本,术后常规解剖原发灶及各组淋巴结,并标记和计数,计算肿瘤部位、浸润深度、Borrmann分型及分化程度与淋巴结转移率的关系。结果 胃癌的淋巴结转移率为73%,转移度为35.6%;C、M、A区及全胃癌淋巴结转移率为60.3%、55.4%、63.1%和88.4%;早期胃癌、浆膜内和浆膜外浸润的淋巴结转移率依此呈递增趋势(P<0.05);Borramnn Ⅲ、Ⅳ型胃癌淋巴结转移率明显高于BorrmannⅠ、Ⅱ型(P<0.05);分化差者明显高于分化好者(P<0.05)。结论 术中淋巴结清扫应按胃癌的临床病理分期、部位、大小、大体分型和分化程度作出判断,并结合不同分区淋巴结分组、分站转移特点,合理选择淋巴结清扫范围。  相似文献   

3.
目的探讨进展期胃癌行D:根治术时第14v组淋巴结清扫的必要性。方法回顾性分析2003至2007年间天津医科大学附属肿瘤医院收治的131例行胃癌根治术(D2或D2+)并同时加行第14v组淋巴结清扫的胃癌患者的临床病理资料,分析影响第14v组淋巴结转移的临床病理因素以及第14v组淋巴结转移与预后的关系。结果131例患者中24例(18.3%)有第14v组淋巴结转移。原发灶部位、肿瘤大小、浸润深度、淋巴结分期、TNM分期、第1、6、8a组淋巴结转移与第14v组淋巴结转移有关(均P〈0.05);其中原发灶部位和淋巴结分期是影响第14v组淋巴结转移的独立因素(均P〈0.05)。第14v组淋巴结转移和未转移患者5年生存率分别为8.3%和37.8%,差异有统计学意义(P〈0.01)。多因素预后分析证实。第14v组淋巴结转移是影响进展期胃癌D:根治术后生存的独立危险因素(P=-0.029,RR=1.807,95%CI:1.064-3.070)。结论对于进展期胃中下部癌.尤其是肿瘤体积较大、浆膜受侵犯、第6组淋巴结可疑转移的患者,第14v组淋巴结清扫是必要可行的。  相似文献   

4.
食管癌淋巴结转移特点及其危险因素   总被引:1,自引:1,他引:0  
目的 探讨食管癌淋巴结转移情况及其危险因素,为外科手术行淋巴结清扫提供参考。方法回顾总结2006年1月至2010年12月在复旦大学附属肿瘤医院胸外科行三野淋巴结清扫食管癌根治术308例患者的临床资料.分析淋巴结的转移规律及特点。结果308例患者平均清扫淋巴结(35.6±14.5)枚,197例(64%)患者出现淋巴结转移。Logistic单因素分析结果显示,脉管(淋巴管及血管)侵犯(P=0.019)及肿瘤浸润深度(P〈0.001)是发生淋巴结转移的危险因素。各站淋巴结中,胸部气管旁淋巴结转移率最高(25.0%)。上段食管癌腹部淋巴结转移率显著低于中段或下段食管癌(P=0.001),而各段食管癌颈胸部淋巴结转移率比较,差异无统计学意义(P〉0.05)。颈胸部和颈胸腹部淋巴结转移率分别为14.6%和11.0%,而颈腹部和胸腹部则分别为3.6%和4.9%。脉管侵犯(P〈0.001)和胸部气管旁淋巴结转移(P=0.014)是食管癌发生颈部淋巴结转移的危险因素。结论食管癌淋巴结转移具有上、下双向和跳跃性的特点.胸部气管旁淋巴结转移可作为行颈部淋巴结清扫的指征。  相似文献   

5.
目的探讨胃下部癌No.14v淋巴结转移及微转移情况。方法回顾性分析青岛大学医学院附属医院普通外科2007年9月至2008年9月期间由同一术者连续施行根治性手术的53例胃下部癌患者的临床资料.并采用常规病理检查和端粒酶活性检测法分别检测手术清扫的No.14v淋巴结转移转移和微转移情况。结果本组53例胃下部癌患者术中共获取No.14v淋巴结96枚,每例1-3(平均1.8)枚。常规病理检查提示有9例患者(11枚)No.14v淋巴结发生转移,淋巴结转移率为17.0%。常规病理检查阴性的44例患者中有13例(13枚)No.14v淋巴结出现微转移.淋巴结微转移率为29.5%(13/44)。总的淋巴结转移率(转移加微转移)为41.5%(22/53)。No.14。淋巴结转移和微转移与本组胃癌患者Bomnann分型、No.6淋巴结转移、肿瘤大小、浸润深度及肿瘤TNM分期有关(P〈0.05),而与年龄、性别、肿瘤分化程度无关(P〉0.05)。结论胃下部癌患者No.14,淋巴结存在较高的转移率及微转移率:No.6淋巴结状态可以为术中判断No.14v淋巴结转移与否提供参考。  相似文献   

6.
目的:探讨前列腺癌盆腔各解剖区域淋巴结转移特点及其临床意义。方法:收集因前列腺癌而行前列腺根治切除+分区盆腔淋巴结清扫术93例患者的临床病理资料,将盆腔淋巴结分为9区5组,明确盆腔各解剖区域淋巴结转移的频率和分布,比较各组淋巴结转移率和转移度。结果:全组有25例发生淋巴结转移,转移率为26.9%(25/93)。低、中、高危组前列腺癌的淋巴结转移率分别为2.6%(1/39)、30.0%(9/30)、62.5%(15/24)。各组转移率由高到低排列为髂内、闭孔、髂外、骶前和髂总,分别为16.4%(11/67),15.1%(14/93),11.8%(11/93),2.3%(1/44)和0(0/67),差异有统计学意义(P〈0.01)。转移淋巴结(阳性)53枚,转移度为3.2%(53/1643)。各组转移度由高到低排列为闭孔、髂内、髂外、骶前和髂总分别为4.9%(23/468),4.0%(16/401),3.2%(12/378),0.9%(2/222)和0(0/174),差异有统计学意义(P〈0.01)。结论:①对低危组的患者可不实施盆腔淋巴结清扫;对中一高危组患者,必须实施淋巴结清扫。②清扫范围:髂外、髂内和闭孔组为必须清扫的最小区域范围;髂总和骶前组不必进行常规清扫;③可根据术中闭孔、骶前组淋巴结快速冰冻病理检查,明确有无转移,来决定盆腔淋巴结清扫最适个体化清扫范围。  相似文献   

7.
目的探讨影响进展期胃癌第14v组淋巴结转移的危险因素。方法回顾性分析2007年1月至2011年12月天津医科大学肿瘤医院收治的170例进展期胃癌患者的临床资料。所有患者行胃癌D2+第14v组淋巴结清扫手术治疗,并经病理检查确诊为腺癌。记录患者的一般资料,收集手术切除标本详细记录各组淋巴结检出数目及阳性数目。影响第14v组淋巴结转移的临床病理因素的单因素分析及多因素分析采用二元Logistic回归模型,第14v组淋巴结转移与区域淋巴结转移相关性分析采用二元Logistic回归分析。结果170例患者共获取第14v组淋巴结459枚,平均每例患者2.7枚(1—17枚);共检出阳性淋巴结55枚,平均每例患者1.7枚(1~3枚)。单因素分析结果显示:第14v组淋巴结转移与肿瘤根治程度、肿瘤直径、肿瘤淋巴结转移(N分期)、肿瘤远处转移(M分期)相关。进一步分析发现:肿瘤%切除、肿瘤直径≤4cm、NO期、M0期的进展期胃癌患者比较,肿瘤R,或R:切除、肿瘤直径〉4cm、N2期、N3期、M1期的患者更易发生第14v组淋巴结转移(OR=3.899,2.646,19.231,33.929,5.000,95%可信区间:1.111—13.677,1.075~6.516,2.333—158.548,4.310—267.112,1.617—15.464,P〈0.05)。多因素分析结果显示:N分期是影响进展期胃癌患者第14v组淋巴结转移的独立危险因素,与N0期患者比较,N2、N3期患者更容易发生第14v组淋巴结转移(OR=15.248,26.287,95%可信区间:1.811—128.386,3.244—213.034,P〈0.05)。区域淋巴结转移与第14v组淋巴结转移的相关分析结果表明:第4sb、4d、5、6、7、8a、9、11p、12a、16组淋巴结转移与第14v组淋巴结转移相关(OR=3.923,3.335,2.693,5.641,3.100,4.203,3.655,3.660,3.838,17.400,95%可信区间:1.264~12.177,1.425~7.807,I.149—6.312,2.126~14.965,1.311~7.330,1.735~10.185,1.395~9.582,1.331~10.666,1.086—13.571,2.707—111.837,P〈0.05)。结论N分期是第14v组淋巴结转移的独立危险因素,上游淋巴结中第6组淋巴结状态是预测第14v组淋巴结转移的最佳淋巴结指标。  相似文献   

8.
目的探讨胃癌发生孤立性淋巴结转移对患者预后的影响。方法总结1995年1月至2003年12月间施行胃癌D2根治术的280例患者的临床资料.比较分析有淋巴结孤立性转移(孤立转移组)与无淋巴结转移(无转移组)两组患者的预后差异,进一步比较孤立转移组中跳跃性与非跳跃性淋巴结转移患者预后的差异:并进行预后因素分析。结果孤立转移组患者83例.无转移组患者197例。孤立转移组和无转移组术后5年生存率分别为623%和83.5%.差异有统计学意义(P〈0.05)。孤立性淋巴结转移是影响本组患者预后的独立因素之一(P〈0.01)。肿瘤浸润深度是胃癌孤立性淋巴结转移的独立危险因素(P〈0.05)。孤立转移组中跳跃性淋巴结转移者19例(22.9%),跳跃性与非跳跃性淋巴结转移患者术后5年生存率分别为50.0%和66.1%.差异无统计学意义(P〉0.05)。结论发生孤立性淋巴结转移的胃癌患者预后较无淋巴结转移者差。施行D2根治术有助于跳跃性淋巴结转移的清扫.  相似文献   

9.
目的探讨进展期远端胃癌行D2根治术时No.12b组淋巴结清扫的必要性及可行性,及No.12b组淋巴结转移与临床病理因素的关系。方法回顾性收集60例进展期远端胃癌患者的病例资料,患者行D2或D2^+根治术,并均加行No.12b组淋巴结清扫术。分析No.12b组淋巴结转移与临床病理因素的关系。结果全组无手术死亡病例,无严重并发症发生。60例患者中发现12例有No.12b组淋巴结转移,转移率为20.00%。其中BorrmannⅢ、Ⅳ型者No.12b组淋巴结转移率为31.25%(10/32),淋巴结转移N2~3期者为30.30%(10/33),肿瘤浸润T3~4期者为29.73%(11/37),明显高于BorrmannⅠ、Ⅱ型〔7.14%(2/28)〕,N0~1期〔7.41%(2/27)〕及T1~2期者〔4.35%(1/23)〕,P〈0.05;No.12b组淋巴结转移与肿瘤的大小无关(P〉0.05)。结论 No.12b组淋巴结清扫术对于进展期胃远端癌是必要且可行的,其远期效果有待大样本的前瞻性研究进一步证实。  相似文献   

10.
胃癌单个淋巴结转移规律及临床意义   总被引:1,自引:0,他引:1  
目的分析胃癌淋巴结转移的规律以指导临床规范化治疗。方法对天津医科大学附属肿瘤医院1999年7月至2004年6月间经手术治疗、清扫淋巴结数大于或等于10枚、术后病理证实仅有1枚淋巴结转移的胃癌患者临床资料进行回顾性分析.并对淋巴结跳跃与非跳跃转移、横向与非横向转移患者的资料进行对比。结果全组65例患者共检出淋巴结1415枚.平均21.8枚/例;单个淋巴结转移率的分布从多到少依次为N0.3(30.8%)、No.4(21.5%)、No.6(15.4%)、No.7和No.8(均为6.2%)、No.1和No.2及N0.5(均为4.6%)、No.12(3.1%)和No.14及No.16(均为1.5%);其中跳跃转移20.0%(13/65),横向转移42.2%(19/45)。单因素分析显示.淋巴结跳跃性转移仅与肿瘤大小有关(X2=4.447,P=0.035):淋巴结横向转移与各临床病理因素均无关。但淋巴结跳跃与非跳跃转移、横向与非横向转移间患者的生存曲线差异有统计学意义(P=0.000.P=0.000)。结论胃癌淋巴结转移规律总体遵循由远及近的转移顺序.但跳跃转移和横向转移方式也占有一定比例.对于胃癌淋巴结跳跃转移和横向转移的高危患者.术中应加强相应区域淋巴结清扫以提高患者生存率。  相似文献   

11.
目的 探讨胃窦(胃L区)癌的淋巴结转移规律与临床病理因素之间的关系及其临床意义.方法 对2006年6月至2007年12月期间于西安交通大学医学院第一附属医院进行胃窦癌根治性淋巴结清扫手术的129例患者的手术切除标本进行解剖,分组收集切除淋巴结,逐枚进行病理组织学检查,判断淋巴结是否转移并计算各组淋巴结转移率,分析其与肿瘤大小、肿瘤部位、浸润深度、组织学类型、Borrmann分型等方面的关系.结果 本组129例胃窦癌患者的淋巴结转移阳性80例(62%).共收获3295枚淋巴结,平均每例25.54枚,中位数24枚/例,转移淋巴结数889枚.胃窦癌患者No.1、No.3、No.4d、No.5、No.6、No.7、No.8a、No.9、No.11p、No.12a、No.14v各组淋巴结转移率分别为18.60%、48.84%、37.98%、38.76%、44.19%、31.01%、10.85%、14.73%、4.65%、1.55%及0.78%,其中以No3和No6组为最高.结论 在实施胃癌根治手术时,应综合考虑各临床病理因素,并结合胃窦区胃癌淋巴结分组、分站转移的特点,合理选择淋巴结清扫范围,以达到根治目的.  相似文献   

12.
胃癌哨兵淋巴结位置分布及其转移相关因素   总被引:2,自引:0,他引:2  
Wu YL  Yu JX  Gao SL  Yan HC  Xia Q  Huang CP 《中华外科杂志》2004,42(20):1240-1243
目的 探讨胃癌哨兵淋巴结位置分布规律以及导致其转移的相关因素。方法 调查2 7例单个转移淋巴结、80例单组转移淋巴结的位置分布 ,比较单个转移淋巴结和 111例无转移淋巴结病人的临床病理参数。结果  2 7个单个转移淋巴结中有 2 5个位于第 1站 ,跳跃转移 2个 ;2 1例胃下区、胃中区癌哨兵淋巴结中 16个在第 3、4组 ,6例胃上区癌哨兵淋巴结中 3个位于第 1组。pT3 期胃癌哨兵淋巴结转移的危险性高于pT1胃癌 ,比数比 (OR)为 4 92 6 (P <0 0 1) ,胃上区癌比胃下区癌哨兵淋巴结更易发生转移 (OR =4 381,P <0 0 5 ) ,早期胃癌哨兵淋巴结的转移危险性低于BorrmannⅠ型胃癌 (OR =0 0 82 ,P <0 0 5 )。结论 胃癌哨兵淋巴结多位于肿瘤附近 ,跳跃转移少见 ;肿瘤侵犯深度以及所在部位与哨兵淋巴结发生转移有关 ,利用胃癌哨兵淋巴结可以指导胃癌淋巴结切除范围的选择  相似文献   

13.
Kunisaki C  Shimada H  Nomura M  Akiyama H 《Surgery》2001,129(2):153-157
BACKGROUND: Lymph node dissection in patients with early gastric cancer is controversial because lymph node metastases are much less common than in advanced cancer. Therefore, routine extensive lymph node dissection with wide resection of the stomach may be excessive, and an appropriate lymph node dissection procedure in patients with early gastric cancer should be established. METHODS: Retrospectively, 588 consecutive patients with early gastric cancer were analyzed by univariate and multivariate analysis to predict lymph node metastases with clinicopathologic variables. The sites and rates of lymph node metastases for each tumor location were mapped. RESULTS: In early gastric cancer, depth of invasion was an independent predictive factor of lymph node metastases. In cancer confined to the mucosa, however, tumor diameter was the only predictive factor. In contrast, tumor diameter, macroscopic appearance, and histologic type were not predictive factors in early gastric cancers invading the submucosa. In mucosal cancer, metastasis to lymph nodes was confined to the paragastric lymph nodes on the same side of the stomach as the tumor. In submucosal cancer, the incidence of lymph node metastasis was 2% to 17% in group 1 and 1% to 3% in group 2 lymph nodes. CONCLUSIONS: In mucosal cancer, lymph node dissection is unnecessary for tumors measuring less than 30 mm, and limited lymph node dissection with local gastrectomy is appropriate when tumor diameters are 30 mm or greater. In submucosal cancer, gastrectomy with dissection of group 1 and some group 2 lymph nodes should be sufficient to remove all nodal metastases.  相似文献   

14.
157例早期胃癌淋巴结转移特点及预后分析   总被引:3,自引:1,他引:2  
目的探讨早期胃癌(EGC)临床病理特征和淋巴结转移规律及其对预后的影响。方法回顾性分析1995年10月至2005年10月间经手术治疗的157例EGC的临床病理特征和淋巴结转移规律及患者3年、5年的生存率。结果157例EGC患者有22例(14%)伴有淋巴结转移,其中黏膜癌2例(2.4%),仅累及N1淋巴结;黏膜下癌20例(27.0%),除累及N1淋巴结外,有7例同时累及N2淋巴结;两者比较,差异有统计学意义(P〈0.01)。微小胃癌(直径小于或等于0.5cm)者未见有淋巴结转移:直径小于或等于2.0cm和大于2.0cm的胃癌患者.淋巴结转移率分别为6.4%和21.5%;两者比较,差异有统计学意义(P〈0.01)。高分化EGC未见淋巴结转移;中分化及低分化EGC的淋巴结转移率分别为11.1%和20.9%;两者比较,差异有统计学意义(P〈0.01)。有9例出现脉管癌栓.其中4例伴淋巴结转移。Logistic回归多因素分析结果显示,肿瘤大小、分化程度、浸润深度、脉管癌栓均为影响EGC淋巴结转移的独立因素。伴有淋巴结转移的EGC患者3年、5年生存率分别为81.6%和79.5%,明显低于无淋巴结转移者的95.7%和93.2%(P〈0.01)。结论EGC的淋巴结转移主要与肿瘤浸润深度、肿瘤大小、脉管癌栓及肿瘤分化程度密切相关。应根据淋巴结转移的风险合理选择EGC的治疗方式。  相似文献   

15.
目的探讨进展期胃下部癌No.14v淋巴结转移的危险因素。方法分析2013年1月至2016年12月247例胃下部癌病人的临床资料,所有病人均行胃癌D2+No.14v淋巴结切除术。记录病人的一般资料、各组淋巴结检出数目及阳性数目,分析No.14v淋巴结转移的危险因素。结果247例共检出淋巴结11 837枚(16~107枚/例),平均(47.92±15.11)枚/例。179例有淋巴结转移,总体淋巴结转移率为72.47%。共获取No.14v淋巴结716枚(1~9枚/例),平均(2.90±1.43)枚/例。247例中No.14v淋巴结转移19例,转移率为7.69%。No.14v淋巴结转移与性别、肿瘤侵犯深度、分化程度、Laurén分型及Borrmann分型不相关(P0.05),与肿瘤大小、部位、pTNM分期以及No.4和No.6淋巴结转移相关(P0.05)。结论进展期胃下部癌病人,原发灶位于胃大弯侧、肿瘤最大径≥4 cm,以及怀疑No.4或No.6淋巴结转移,是No.14v淋巴结转移的危险因素。  相似文献   

16.
目的探讨肿瘤大小对T3期胃癌患者预后的影响。方法对408例L期胃癌患者施行胃癌D2根治术,应用Cox比例风险模型对肿瘤大小进行最佳截点的筛选。对全组T3期胃癌患者的预后因素进行单因素及多因素分析:并对大直径组及小直径组胃癌患者的预后因素进行多因素分析。结果本组408例T3期胃癌患者通过Cox比例风险模型筛选出肿瘤大小的最佳截点为8cm。肿瘤大于或等于8cm的胃癌患者(大直径组)85例.小于8cm的胃癌患者(小直径组)323例:大直径组和小直径组术后5年生存率分别为33.8%和52.2%,差异有统计学意义(P〈0.05)。通过Cox比例风险模型分析显示,肿瘤大小、淋巴结转移、Boi Tmann分型和肿瘤部位是影响全组患者预后的独立因素(均P〈0.01):进一步按肿瘤大小进行分层预后分析显示,Borrmann分型和淋巴结转移是影响大直径组患者预后的独立因素(均P〈0.05);淋巴结转移是影响小直径组患者预后的独立因素(P〈0.01)。结论以8cm为界值进行B期胃癌患者的预后判断准确性最高。肿瘤大小是影响B期胃癌患者预后的独立因素。  相似文献   

17.
The surgical management of locally advanced gastric cancer remains controversial. It is also unclear whether the postoperative survival rate could be improved by extended lymph node dissection. The aim of this paper is to determine the survival benefit of and the indications for extended surgery. Lymph node metastasis in the paraaortic area frequently occurs in locally advanced cardiac cancer. In our previous studies, the paraaortic lymph nodes above and below the left renal vein were confirmed to be the terminal destination of lymphatic flow in the upper abdominal cavity. Paraaortic lymph node dissection is essential for curarive resection in some cases of advanced gastric cancer. The 5-year survival rate in patients who undergo paraaortic lymph node dissection is nearly 15% according to the literature. Patients with metastasis of the paraaortic lymph nodes on only one side and with fewer than four involved nodes clearly benefit from paraaortic lymph node dissection. It is indicated in cases with metastasis or suspected metastasis of the left or right cardiac lymph node or N2 lymph node station. There is little survival benefit from combined resection of involved organs (T4 disease) and it should only be performed in a select group of patients. Extended surgery for locally advanced gastric cancer, however, is feasible and has acceptable operative morbidity and mortality rates.  相似文献   

18.
Abstract The purpose of this retrospective study was to analyze the distribution of lymph node metastases, including micrometastases, according to the location of the gastric cancer with submucosal invasion. A total of 118 patients with submucosal gastric cancer were enrolled in this study. The distribution of lymph node metastases was examined according to tumor location. Immunohistochemical examination using anti-cytokeratin antibody was performed to examine nodal micrometastases in 118 patients. Lymph node metastasis was found in 19.5% (23/118) of the patients. Significant differences were found for tumor size and depth, lymphatic invasion, and venous invasion for patients with and without nodal metastasis. The distribution of lymph node metastasis for tumors at upper or middle portions of the stomach was mainly found along the left gastric artery. The distribution of lymph node metastasis for tumors in the lower and lesser curvature varied. Immunohistochemical analysis found that 15 of 23 patients with lymph node metastasis found by histologic examination had micrometastases. The presence of two or more lymph node micrometastases was found in these 15 patients, and they were distributed in another stations, including distant nodes. The incidence of micrometastasis was 24.2% (23/95) in pN0 patients. Lymph node micrometastases were confined to regional nodes near the primary tumor. When planning minimally invasive treatment for submucosal gastric cancer, it is important to understand the distribution of lymph node metastasis, including micrometastasis, according to tumor location.  相似文献   

19.
Background: Gastric cancer is the most frquent cancer and the leading cause of death from cancer in Korea. Early gastric cancer has been defined as a gastric carcinoma confined to mucosa or submucosa, regardless of lymph node status, and has an excellent prognosis with a >90% 5-year survival rate. From 1974 to 1992, we encountered 7,606 cases of gastric cancer and performed 6,928 gastric resections. Among them, 1,136 cases were early gastric cancer (14.9% of all gastric cancer cases and 16.4% of resected gastric cancer cases). Methods: A retrospective analysis of 1,136 cases of early gastric cancer was performed to evaluate the prognostic significance of clinicopathologic features (sex, age, tumor location, gross type, histologic type, depth of invasion, status of lymph node metastasis, resection type). Lymph node metastasis was classified into three groups: N(n=0) for no lymph node metastasis; N(n=1–3) for one to three lymph node metastases; and N(n>3) for more than three lymph node metastases. All patients received radical total or subtotal gastrectomy with lymph node dissection. Results: In univariate and multivariate analysis of these nine factors, the only statistically significant prognostic factor was regional lymph node metastasis (p<0.001). The others had no statistically significant association with prognosis. Lymph node metastasis was present in 178 cases (15.7%). The factors associated with the lymph node metastasis were depth of invasion and gross type [protruding type (e.g., types I, IIa)]. One hundred twenty-five of these patients had one to three lymph node metastases, and 53 cases had more than three lymph node metastases. The difference in 5-year survival rates among these groups was statistically significant: 94.5% for N(n=0), 88.3% for N(n=1–3), and 77.3% for N(n>3). Conclusion: We propose that for early gastric cancer, lymph node dissection is necessary in addition to gastric resection, at least in patients with a high risk of lymph node metastasis.  相似文献   

20.
Para-aortic lymph nodes (No. 16) from 21 patients with advanced gastric cancer who underwent extensive lymph node dissection, were sliced consecutively at intervals of 50 mu to study minute metastasis of No. 16 lymph nodes. Twenty-six of 30 metastatic lymph nodes had minute involvement, in which carcinoma cells were detected in marginal sinus of lymph node, microscopically. The rate of the metastases to No. 16 lymph nodes was 19% among N0-3 cases by conventional method (not consecutive slices). On the contrary, the percentage of metastasis to No. 16 lymph nodes by consecutive slices was 33% among N0-3 cases. Therefore, No. 16 nodes are involved in metastasis at high rate at operation and the extensive lymph node dissection including No. 16 nodes (R4) will be recommended to prevent lymph node recurrence caused by such a minute metastasis.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号