良性腫瘤指腫瘤細胞未發生轉移與侵入周遭組織的情形，反之則稱為惡性腫瘤，多數會影響生理功能的腫瘤都是惡性腫瘤。
[238] Individuals from Asian and South American countries also are inclined to want a slower, fewer candid approach to disclosure than is idealized in The us and Western Europe, plus they think that occasionally it would be preferable never to be informed a few most cancers diagnosis.[238] Normally, disclosure of the analysis is a lot more widespread than it absolutely was from the twentieth century, but total disclosure in the prognosis is not really available to numerous clients throughout the world.[238]
维基百科中的醫學内容仅供参考，並不能視作專業意見。如需獲取醫療幫助或意見，请咨询专业人士。詳見醫學聲明。
Western conceptions of individuals' rights for individuals with cancer involve a obligation to totally disclose the professional medical situation to the individual, and the appropriate to engage in shared selection-generating in a way that respects the person's personal values. In other cultures, other rights and values are preferred. For instance, most African cultures benefit complete people in lieu of individualism. In parts of Africa, a prognosis is usually created so late that overcome is impossible, and treatment method, if available whatsoever, would rapidly bankrupt the spouse and children. On account of these components, African healthcare suppliers usually Permit relations make a decision whether, when And just how to reveal the analysis, and they have a tendency to take action slowly but surely and circuitously, as the person shows desire and an capability to cope Using the grim information.
許多預防癌症的想法是根據流行病學的研究而來，分析病患的資料可發現生活方式或是接觸一些環境危險因子的確與特定癌症的發生機率相關。越來越多的證據顯示，根據流行病學研究所提出的建議改善，確實可以讓癌症發病率和死亡率降低。
筛查旨在确认尚未出现症状但已具有暗示特定癌症或癌症前期迹象的个体。如在筛查中发现异常，则应进行进一步检测以作出明确诊断，如果证明存在癌症，还应转诊进行治疗。
症状性癌症的早期诊断在所有环境中并且对大多数癌症都意义重大。癌症规划应旨在减少诊断、治疗和支持性护理方面的延误和障碍。
The health practitioner John Hill described tobacco sniffing as the reason for nose cancer in 1761.[229] This was followed by the report in 1775 by British surgeon Percivall Pott that chimney sweeps' carcinoma, a most cancers on the scrotum, was a common ailment amongst chimney sweeps.
Reduced expression of DNA mend genes disrupts DNA repair service. This can be demonstrated in the figure with the 4th amount from the leading. (While in the figure, purple wording suggests the central job of DNA damage and defects in DNA restore while in the 癌症 progression to cancer.) When DNA restore is deficient DNA injury remains in cells at a better than normal level (fifth level) and triggers improved frequencies of mutation and/or epimutation (6th amount).
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。
On two December 2023, Nano Currently printed a groundbreaking discovery involving "NK cell-participating nanodrones" for targeted cancer procedure. The event of "NK cell-engaging nanodrones" signifies a significant breakthrough in most cancers therapy, showcasing how slicing-edge nanotechnology and immunotherapy can be blended to focus on and get rid of cancer cells with unparalleled precision.
筛查规划根据年龄和风险因素来选择患者，以避免进行过多假阳性研究。筛查方法的例子包括：
癌症治療會有許多後遺症，過程十分不易，因此治療後的照顧相當重要，包括疼痛控制、改善食慾、心理調適等，需要不同醫療團隊的合作，提高癌症病人的生活品質。（延伸閱讀：不是放棄治療！剖析緩和與安寧照護的真相）
癌症的治疗方法仍然是目前医学研究的前沿内容。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。癌症多采用综合 治疗，以外科手术、化疗、放疗相结合为主，有需要者可结合靶向治疗、生物治疗 等方法，以提高预后。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。我们也专门针对癌症的治疗方法进行总结与归纳，用通俗的语言为大家 介绍，详细内容参考链接()。在此，我们将简要介绍癌症治疗的分类方法。