某些癌症类型，如睾丸精原细胞瘤以及不同类型的儿童白血病和淋巴瘤，如果加以适当的治疗，即使癌细胞已经扩散到身体其它部位，治愈率也很高。
Metastasis is popular during the late phases of cancer and it may possibly come about through the blood or even the lymphatic system or both of those. The standard actions in metastasis are:
Disruption of just one gene can also consequence from integration of genomic product from the DNA virus or retrovirus, bringing about the expression of viral oncogenes while in the influenced mobile and its descendants.
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。
In America, most cancers is provided being a safeguarded issue with the Equal Work Prospect Commission (EEOC), largely a result of the likely for cancer owning discriminating outcomes on employees.[253] Discrimination within the place of work could arise if an employer holds a Wrong belief that anyone with cancer isn't effective at carrying out a occupation thoroughly, and will ask for more Unwell leave than other workforce.
By contrast, after you click on a Microsoft-furnished ad that appears on DuckDuckGo, Microsoft Promotion isn't going to affiliate your ad-click on habits with a consumer profile. It also isn't going to retail store or share that details in addition to for accounting functions.
这里需要注意另外一个概念——肿瘤。肿瘤是局部组织细胞增生所形成的新生物。 肿瘤分为良性肿瘤和恶性肿瘤两大类。良性肿瘤不会扩散或侵入附近组织。切除后， 良性肿瘤通常不会再长出来，而恶性肿瘤有时会。然而，良性肿瘤的体积有时可能 很大，有些会引起严重的症状或危及生命，比如脑部的良性肿瘤。恶性肿瘤可分为 癌和肉瘤，癌是指来源于上皮组织的恶性肿瘤。癌性肿瘤会扩散或侵入附近的组织， 并可以扩散到身体的远处形成新的肿瘤(这一过程称为转移)。许多癌症形成实体瘤， 但白血病是血液癌症不会形成实体瘤。如果还是没能理解肿瘤和癌症的关系，可以看 下图。在后续的文章中我们将针对各类不同的癌症进行深入的讨论与分析。
免疫療法是利用人體內的免疫機制來對抗腫瘤細胞。已經有許多對抗癌症的免疫療法在研究中。目前較有進展的就是癌症疫苗療法和單株抗體療法，而免疫細胞療法則是最近這幾年最新發展的治療技術。
Decreased expression of DNA repair service genes disrupts DNA restore. This is certainly revealed within the figure with the 4th stage through the major. (Within 癌症 the figure, red wording indicates the central part of DNA hurt and defects in DNA maintenance within the progression to most cancers.) When DNA maintenance is deficient DNA damage continues to be in cells at the next than standard amount (fifth degree) and triggers improved frequencies of mutation and/or epimutation (6th amount).
癌症是一種複雜的疾病，其特徵是異常細胞在體內不受控制地生長和擴散。要徹底了解什麼是癌症，重要的是要探索細胞生長、腫瘤形成、良惡性腫瘤分化以及癌細胞如何在全身擴散所涉及的基本過程。 所有癌症我們的使命是提供明確、富有同情心的支持和專門針對每位患者需求的全面護理。 癌症是如何發展的
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Human immunodeficiency virus (HIV) does indirectly cause cancer however it results in immune deficiency that could magnify the danger due to other infections, sometimes up to various thousandfold (in the situation of Kaposi's sarcoma). Importantly, vaccination in opposition to the hepatitis B virus and the human papillomavirus are already revealed to nearly do away with the potential risk of cancers attributable to these viruses in people effectively vaccinated just before infection.
用醫學影像技術檢測癌症，也遭遇類似問題。這些醫學影像檢測技術都是成本相當高且耗費時間。由於偵測的靈敏度極高，常發現細胞病變（英语：incidentaloma），這樣的腫瘤也可以被認為惡性，而進行具有潛在危險性的治療方法。
惡性轉移的症狀：淋巴結腫大、咳嗽、咳血、肝腫大、骨頭疼痛、骨骼因腫瘤轉移影響發生骨折以及神經系統的症狀。雖然癌症末期會出現疼痛的現象，但疼痛往往並不是惡性轉移發生的症狀。