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。
癌症的治療無論是化療、手術或放療都是對身體有極大負擔，並且在發生惡性轉移後，無論是何種方式都是很難徹底治癒。所以在癌症的治療仍然是人類面對的極大考驗。在目前對於年老的癌症患者，或許找出能維持生活品質並讓其能平靜走向生命旅程的終點的治療方式，會是比積極消除癌細胞而使用副作用極大的治療方式要來的實際且重要。
For anyone Young children who Enjoy These creepy crawlies, they won't be disappointed, and usually there are some rather amazing birds to identify. Attempt to place those cute barn owls, or those legendary vultures. There are even some quite interesting birds with a few quite iconic sounds, like the Kookaburra!
Cytogenetics and immunohistochemistry are other kinds of tissue assessments. These assessments give information regarding molecular variations (which include mutations, fusion genes and numerical chromosome modifications) and may thus also point out the prognosis and greatest cure.
Signs or symptoms of cancer metastasis count on The placement of your tumor. When most cancers starts, it provides no signs or symptoms. Indicators and indicators look as the mass grows or ulcerates.
如前所述，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：
Predicting quick- or extended-expression survival is determined by several things. The key tend to be the most cancers style as well as the patient's age and General well being. Those people who are frail with other health issues have reduced survival prices than normally wholesome people today. Centenarians are not likely to survive for 5 years even when cure is productive.
癌症患者的临床表现与发病部位、大小、有无转移、发展时期等因素有关。病变早期多无显著症状，随病变进展，可出现肿块、疼痛、出血、梗阻等局部症状，以及发热、乏力、贫血、消瘦等全身症状。
选择某些生活方式会增加患癌风险。抽烟、女性每天饮酒超过一杯、男性每天饮酒两杯以上、过度暴露在阳光下或经常晒伤起疱、肥胖和不安全的性行为都可能导致癌症。
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。
[238] Folks from Asian and South American countries also are inclined to prefer a slower, fewer candid approach to disclosure than is idealized in the United States and Western Europe, and so they think that in some cases It will be preferable never to be informed about a cancer diagnosis.[238] Generally, disclosure of your analysis is a lot more popular than it absolutely was during the twentieth century, but entire disclosure on the prognosis is just not presented to several individuals around the globe.[238]
Disruption of only one gene may additionally result from integration of genomic content from the DNA virus or retrovirus, resulting in the expression of viral oncogenes in the impacted cell and its descendants.
烟草使用、酒精消费、不健康饮食、缺乏身体活动和空气污染是癌症（以及其他非传染性疾病）的危险因素。
It absolutely was found that supplying mixed cytotoxic medications is a lot better than an individual drug, a approach identified as The mixture therapy, which has an advantage from the data of survival and reaction to your tumor and 癌症 while in the progress in the condition.