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。
癌症扩散。随着癌症进展，它可能扩散（转移）到身体其他部位。癌症扩散到哪里取决于所患癌症的类型。
Metastasis is typical within the late levels of cancer and it can take place by means of the blood or the lymphatic method or each. The standard ways in metastasis are community invasion, intravasation into your blood or lymph, circulation throughout the human body, extravasation in to the new tissue, proliferation and angiogenesis.
Surgical treatment is the key technique of procedure for most isolated, stable cancers and could Enjoy a task in palliation and prolongation of survival. It is often a crucial part of the definitive analysis and staging of tumors, as biopsies are usually needed.
避免暴露于紫外线辐射（这主要源于阳光暴晒和人工晒黑设备)和/或采取防晒措施；
The zoo provides numerous spouse and children-friendly encounters, such as seasonal activities, carousel rides, and also a Zoomazium indoor play House for children. Its concentrate on developing partaking and instructive activities makes sure an enriching check out for visitors of all ages.
Predicting limited- or lengthy-phrase survival is determined by several things. The key are definitely the most cancers form as well as the client's age and All round health. Those who are frail with other health problems have decrease survival rates than normally healthful men and women. Centenarians are not likely to survive for five years although therapy is profitable.
第三步——发育不良，除了增殖过度外，粉色细胞的后代在形状和方向上也出现 异常；该组织被称为发育不良。再一段时间过后，一种罕见的改变细胞行为的突变 发生了（紫色）。
确定用于癌症预防和控制的“最合算措施”和其他具有成本效益的重点策略；
They have terrific industry excursion choices for the zoo, that include industry journey alternatives, teacher methods and school partnerships!
[238] Men and women from Asian and South American nations around the world also often prefer a slower, considerably less candid method of disclosure than is idealized in The usa and Western Europe, and so they 癌症 think that in some cases it would be preferable not to be explained to a couple of cancer prognosis.[238] Usually, disclosure of the analysis is a lot more typical than it had been within the 20th century, but whole disclosure of your prognosis is not provided to several individuals all over the world.[238]
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：
最近幾十年的研究中，最為確定的發現就是抽煙和癌症間密切的相關性，許多流行病學研究也已經證實這樣的關係。根據美國的數據顯示，隨著吸煙人數增加，肺癌的死亡率急劇升高。隨著近年來廣為宣導抽菸對身體的傷害之後，抽菸人口的減少，也反映在肺癌死亡率降低上。
通过穿刺、活检或根治手术获得病变组织，结合免疫组化染色、特殊染色、分子病理检测等，能明确癌症的类型、分化程度、分期等信息，以指导临床下一步治疗。