推荐回答（2个）
化学治疗:对病原微生物、寄生虫、恶性肿瘤所致疾病的药物治疗（简称化疗）.化疗是指应用药物治疗癌症.这些特殊的药物可杀灭肿瘤细胞，有时称为细胞毒药物.许多化疗药物来源于自然，如:植物，其他是人工合成.目前已超过50种化疗药物，如常用的有:表阿霉素、阿霉素、柔红霉素、丝裂霉素、氟脲嘧啶脱氧核等.这些药物经常以不同的强度联合应用.化疗是如何给予的？一些化疗药物是以片剂的方式服用，另一些是经肌肉注射或皮下注射的，还有脊髓腔内注入（鞘内注射），更常用的是静脉注射.静脉注射可在数分钟内完成，也可放在大容积的液体内滴注数小时.有时数种药物同时应用.用什么类型的化疗？这取决于所患的肿瘤类型，播散远近和患者整体健康状况.每位病人都有所不同，治疗是针对每位病人专门设计的，这也表明每个病人对治疗的反应是不同的.化疗是否会产生疼痛？一般来说化疗是无痛性的，一些药物静脉输注时可感觉到灼痛感.如果发生这种情况，立即告诉护士或医生，因为当药物泄漏时可以损伤静脉周围的组织.化疗常可在门诊进行，患者可不必在医院过夜.治疗（化疗）持续多长时间？化疗常用疗程给予，疗程可有间歇期，以便正常细胞得到恢复.间歇期为1周或数周，取决于药物的类型或药物的应用.疗程数量取决于治疗类型和治疗目的（治愈或控制癌症）.如何知道化疗是有效的？医生要用数月时间来判断你的治疗效果.患者要接受体格检查，血化验，X射线检查.可以向医生询问有关检查结果和那些提示你病情进展的信息.一般情况下，人们对副作用提得很少.有时人们认为如果没有副作用，药物就无疗效.或者如果有副作用，药物的疗效就很好.但是副作用对每个病人是不一定相同的，有或没有通常不是一个治疗是否有效的信号.化疗时可以用其他药物吗？一些药物可以干扰你的化疗效果.可在开始化疗之前，将自己所用的药单给你的医生看，包括泻药，感冒药片，止痛药和维生素.医生将会告诉你在开始治疗之前是否停止服用这些药物.开始治疗后，服用任何新药或停用已在服用的药物必须让你的医生检查过.在化疗期间可以上班吗？通常说来，化疗期间是不能上班的，但可根据身体情况做适当的锻炼，如:散步、打太极拳等，也可以看看报纸、听听音乐.化疗是肿瘤治疗的一个有效手段，但几乎所有的化疗药物都会引起患者不同程度的食欲不振、恶心、呕吐等，从而削弱患者的营养状况.合理的饮食能预防和减少因治疗带来的体重减轻和营养不良.
是否需要放化疗或者肿瘤对放化疗是否有效,首先要知道是什么类型的肿瘤.一般来说,良性肿瘤是不需要做放化疗,放化疗对良性肿瘤也没有作用.如果是恶性肿瘤是可以做放化疗的,不过对肿瘤是否可以做放化疗指正,主要是要有一份专业的临床肿瘤病理报告.有肿瘤病理报告才可以讨论何时实施合适的放化疗方案.否则,一般只会先给予对症支持治疗而不实行放化疗.
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