癌症是一组可影响身体任何部位的多种疾病的通称。使用的其它术语为恶性肿瘤和赘生物。癌症的一个决定性特征是异常细胞快速生成，这些细胞超越其通常边界生长并可侵袭身体的临近部位和扩散到其它器官。后者被称为转移。广泛转移是癌症死亡的主要原因。
在正常细胞生长期间经常会发生基因突变。但细胞含有一种可识别何时发生错误并修复错误的机制。有时会漏掉某种错误。这种情况可能导致细胞癌变。
Metastasis is frequent while in the late phases of most cancers and it may come about via the blood or perhaps the lymphatic procedure or both equally. The typical steps in metastasis are community invasion, intravasation in to the blood or lymph, circulation through the physique, extravasation in to the new tissue, proliferation and angiogenesis.
Some systemic signs of most cancers are caused by hormones or other molecules made by the tumor, generally known as paraneoplastic syndromes.
Cancers are attributable to a series of mutations. Each and every mutation alters the habits of your mobile relatively. Cancer is essentially a disorder of tissue advancement regulation. For a traditional cell to transform right into a cancer mobile, the genes that control cell progress and differentiation needs to be altered.[99]
有多种类型，常见药物有利妥昔单抗、曲妥珠单抗、贝伐珠单抗、替吡法尼、伊马替尼、索拉非尼、舒尼替尼、血管抑素、硼替佐米等。
[105] Every of such alterations regulates gene expression devoid of altering the underlying DNA sequence. These modifications may perhaps continue to be by way of mobile divisions, endure for a number of generations, and might be considered as such as mutations.
癌症是全球排在第二位的死亡原因。不过，随着癌症筛查、治疗和预防的改进，多种癌症的生存率有所提高。
On 2 December 2023, Nano Nowadays revealed a groundbreaking discovery involving "NK mobile-engaging nanodrones" for qualified cancer treatment method. The event of "NK cell-engaging nanodrones" signifies an important step forward in most cancers treatment method, showcasing how reducing-edge nanotechnology and immunotherapy might be blended to target and reduce most cancers cells with unprecedented precision.
会破坏正常组织；可有手术并发症，可致畸形、影响正常功能，甚至危及生命；已有转移者，不能完全治愈；重要器官无法彻底切除。
不斷增生的癌細胞撐破腫瘤，癌細胞因而擴散至腫瘤周遭的組織及鄰近的淋巴結甚至更遠處。此時癌細胞流竄於原始病灶附近，必需借助循環全身的化學治療藥物治療。
Some option treatments are investigated and shown to get ineffective but still go on for being marketed and promoted. Cancer researcher Andrew J. Vickers stated, "The label 癌症 'unproven' is inappropriate for this kind of therapies; it really is time to claim that a lot of alternative cancer therapies are actually 'disproven'."[204]
Le pays compte additionally de a hundred parcs nationaux dont la plupart offrent des possibilités d'hébergement. Un have to pour les amoureux de nature et de calme.
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