癌症篩檢，是希望在一般大眾身上提早找出潛在未發現與早期無症狀的癌症。所進行的測試必須適合廣大民眾能夠負擔，並且安全，無侵入性而且不易有假陽性結果產生。一旦發現癌症的跡象，更精確的後續檢驗，或使用侵入性手術取得組織切片以確定篩檢結果則是必要的。
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。
Some choice treatments happen to be investigated and proven for being ineffective but nevertheless proceed to get marketed and promoted. Most cancers researcher Andrew J. Vickers stated, "The label 'unproven' is inappropriate for this sort of therapies; it truly is time to claim that numerous alternate cancer therapies are 'disproven'."[204]
Western conceptions of patients' legal rights for people with cancer incorporate a duty to fully disclose the health care scenario to the individual, and the ideal to interact in shared selection-making in a way that respects the individual's have values. In other cultures, other rights and values are favored. Such as, most African cultures benefit full families instead of individualism. In portions of Africa, a prognosis is usually manufactured so late that get rid of is not possible, and treatment, if available in the slightest degree, would promptly bankrupt the household. As a result of these variables, African Health care suppliers are likely to let close relatives determine irrespective of whether, when and how to reveal the analysis, and they tend 癌症 to take action little by little and circuitously, as the person demonstrates fascination and an ability to cope Along with the grim information.
In America, cancer is bundled as a protected affliction with the Equal Work Prospect Commission (EEOC), mainly because of the prospective for most cancers getting discriminating effects on staff.[253] Discrimination in the place of work could happen if an employer holds a Untrue perception that someone with cancer is just not effective at performing a position effectively, and could ask for more Unwell leave than other staff.
您可以通过改变这些习惯来降低患癌风险，尽管有些习惯比其他习惯更难改变。
准确诊断癌症对采取适当有效的治疗措施必不可少，因为每种癌症类型都需要特定的治疗方案。治疗通常包括手术、放疗和/或全身性治疗（化疗、激素治疗、靶向生物治疗）。适当选择治疗方案既要考虑癌症又要考虑接受治疗的个体情况。在限定时间内完成治疗方案对于实现预期的治疗效果很重要。
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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）
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The central purpose of DNA problems and epigenetic defects in DNA maintenance genes in carcinogenesis The classical perspective of most cancers is often a list of diseases pushed by progressive genetic abnormalities that include mutations in tumor-suppressor genes and oncogenes, and in chromosomal abnormalities. A job for epigenetic alterations was identified in the early twenty first century.[103]
Human immunodeficiency virus (HIV) does not directly cause cancer but it surely results in immune deficiency that can Amplify the chance as a consequence of other bacterial infections, at times nearly several thousandfold (in the case of Kaposi's sarcoma). Importantly, vaccination against the hepatitis B virus along with the human papillomavirus are already revealed to just about get rid of the chance of cancers a result of these viruses in folks effectively vaccinated just before infection.
有些恶性肿瘤，并不被称为癌或肉瘤，而是以“恶性……瘤”的名词出现，如恶性黑色素瘤。
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。