概述
脑转移瘤
脑转移瘤
当癌症从身体其他部位开始并扩散(转移)到脑部时会产生脑转移瘤。
当癌细胞从原来的位置扩散到大脑时,就会引起脑转移瘤。任何癌症都可以扩散到大脑,但最容易引起脑转移瘤的类型是肺癌、乳腺癌、结肠癌、肾癌和黑色素瘤。
脑转移瘤可在脑内形成一个或多个肿瘤。转移性脑肿瘤逐渐生长,对周围脑组织产生压力并改变其功能。这会引起各种体征和症状,如头痛、性格变化、记忆丧失和癫痫发作。
对于癌症扩散到脑部的患者,治疗可能包括手术、放射疗法、化疗、免疫疗法或这些方法的组合。在某些情况下,可能建议接受其他治疗。治疗的重点通常是减轻疼痛和癌症引起的症状。
症状
由脑转移瘤引起的体征和症状可能因转移瘤的位置、大小和生长速度而异。
脑转移瘤的体征和症状包括:
- 头痛,有时伴有呕吐或恶心
- 精神变化,例如记忆力问题渐增
- 癫痫发作
- 单侧身体无力或麻木
何时就诊
如果出现令您担心的持续体征或症状,请与医生约诊。如果您曾经接受过癌症治疗,请将您的病史告知医生。
病因
当癌细胞从原发位置扩散时,就会引起脑转移瘤。癌细胞可能通过血流或淋巴系统扩散(转移)到脑部,并在此开始增殖。
从原发位置扩散的转移性癌症根据原发性癌症命名。例如,从乳房扩散到脑部的癌症称为转移性乳腺癌,而不是脑癌。
风险因素
任何类型的癌症都可能扩散到大脑,但是某些类型的癌症引起脑转移瘤的风险更高,包括:
在 Mayo Clinic 治疗
Oct. 25, 2022
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