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肾癌的转移途径

来源:华人健康网 | 发布时间:2011-08-16 14:16:13 | www.chinesejk.com

肾癌可通过直接浸润、淋巴途径和血运三种途径转移。肺和骨髂是常见的转移部位。

直接浸润:肾癌逐渐长大,穿破肿瘤包膜朝四周扩散,向内侵入肾盂,向外突破肾包膜侵及肾周脂肪和筋膜,蔓延到邻近组织如结肠、肾上腺、肝、脾及横膈等。

淋巴途径:据统计15%~30%的肾癌可经淋巴途径转移。左侧转移到肾蒂、主动脉前和左外侧淋巴结;右侧累及肾门附近、下腔静脉前淋巴结、主动脉和下腔静脉间淋巴结。

血运转移:是肾癌重要的转移途径,癌细胞侵犯静脉,从毛细血管、肾内静脉至肾静脉,在静脉内形成瘤栓,可进一步伸入下腔静脉到达右心房,并向肺、骨髂和其他脏器,引起广泛的血运转移。

(编辑:小鱼 )

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