癌症 Can Be Fun For Anyone
癌症有超過一百個種類，一般可依據癌細胞原發部位來分類，例如肺癌、乳癌等；另外能根據不同組織或細胞做以下分類：需要注意的是，癌症并不是完全无法治愈的疾病！！！尽早进行治疗，治愈癌症的可能性也就越大。
Some alternative treatments happen to be investigated and shown to become ineffective but still continue to generally be promoted and promoted. Cancer researcher Andrew J. Vickers stated, "The label 'unproven' is inappropriate for such therapies; it is time to say a large number of alternate most cancers therapies are already 'disproven'."[204]
乙肝病毒、丙肝病毒和某些类型的人乳头瘤病毒可分别增加罹患肝癌和宫颈癌的危险。艾滋病毒感染会使患宫颈癌的风险增加六倍，并还会大幅增加患其他癌症，如卡波西肉瘤的风险。
另一方面，現在有些方法則是想利用身體本身的免疫系統產生非專一性的免疫反應來對抗癌細胞，例如卡介苗膀胱內灌注免疫療法（英语：intravesical BCG immunotherapy）將卡介苗灌注進入膀胱內，以引發免疫反應對抗表淺性膀胱癌（英语：superficial bladder most cancers）。此外使用干擾素和介白質素，均可引起免疫反應。而使用疫苗所產生的免疫反應來對抗腫瘤的研究也正在進行當中，尤其是針對惡性黑色素瘤與腎細胞腫瘤（英语：renal cell carcinoma））。
People that survive cancer build a next Principal most cancers at about twice the rate of Those people never ever diagnosed.[208] The increased hazard is believed to generally be a result of the random chance of creating any most cancers, the probability of surviving the main most cancers, the exact same danger components that produced the very first most cancers, undesirable side effects of managing the very first most cancers (specifically radiation therapy), and better compliance with screening.[208]
The affected genes are divided into two broad groups. Oncogenes are genes that market cell advancement and reproduction. Tumor suppressor genes are genes that inhibit cell division and survival. Malignant transformation can manifest with the formation of novel oncogenes, the inappropriate about-expression of normal oncogenes, or 癌症 with the less than-expression or disabling of tumor suppressor genes.
An additional mutation may well bring about the loss of a tumor suppressor gene, disrupting the apoptosis signaling pathway and immortalizing the cell.
腫瘤較小且尚未擴散/轉移（癌細胞可被定位、手術移除，不需借助循環全身的化學藥物治療）
癌症源于正常细胞转变为肿瘤细胞的多阶段过程，通常从癌前病变发展到恶性肿瘤。这些变化是一个人的遗传因素与三种外部因素相互作用的结果，外部因素包括：
关于世卫组织 合作伙伴 专家组 世卫组织合作中心 世卫组织人员和办事处 我们是谁 规划、资金与问责 活动 措施 资金来源 理事机构 世界卫生大会 执行委员会 世卫组织网站主页/
免疫系统对癌症的异常反应。在某些情况下，身体的免疫系统可能通过攻击健康细胞来对癌症作出反应。这些非常罕见的反应称为副肿瘤综合征，会导致各种体征和症状，如行走困难和癫痫发作。
Possible harms in the screening examination: by way of example, X-ray illustrations or photos contain publicity to most likely dangerous ionizing radiation
If a significant mistake happens, the broken mobile can self-destruct by programmed cell death, termed apoptosis. If the error Manage procedures fail, then the mutations will endure and be handed along to daughter cells.