癌症是以异常细胞生长为特征的众多疾病的统称，这些异常细胞会失控地分裂，并能浸润和毁坏正常身体组织。癌症通常可以扩散到全身各处。
Genetic changes can manifest at different ranges and by diverse mechanisms. The gain or lack of a whole chromosome can manifest by means of errors in mitosis. Extra frequent are mutations, which might be alterations during the nucleotide sequence of genomic DNA.
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Palliative care is treatment that tries that can help the individual truly feel far better and could be combined with an attempt to take care of the cancer. Palliative treatment contains motion to cut back Actual physical, psychological, spiritual and psycho-social distress.
您周围的环境可能含有会导致患癌风险增加的有害化学物质。即使您不吸烟，但如果您前往有人吸烟的地方或是与吸烟者同住，您也可能会吸入二手烟。家里或工作场所的化学物质（如石棉和苯）也会增加患癌的风险。
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。
People with most cancers have an elevated chance of blood clots within their veins that may be everyday living-threatening.[210] The usage of blood thinners including heparin decrease the potential risk of blood clots but have not been shown to enhance survival in people with cancer.[210] People who consider blood thinners also have an elevated risk of bleeding.[210]
健康饮食。选择富含水果和蔬菜的饮食。选择全谷物和瘦肉蛋白质。限制摄入加工肉类。
The Dutch professor Francois de la 癌症 Boe Sylvius, a follower of Descartes, believed that all sickness was the end result of chemical processes Which acidic lymph fluid was the cause of most cancers. His contemporary Nicolaes Tulp believed that most cancers was a poison that bit by bit spreads and concluded that it was contagious.[230]
Replication of the info contained inside the DNA of residing cells will probabilistically result in some problems (mutations). Advanced mistake correction and avoidance are constructed into the procedure and safeguard the cell from most cancers.
Which treatments are used depends upon the sort, locale and grade of the most cancers plus the individual's health and Tastes. The treatment method intent may or may not be curative.[citation needed]
A mutation within the error-correcting machinery of a mobile could cause that mobile and its small children to build up problems far more swiftly.
Attainable harms in the screening test: such as, X-ray images require exposure to most likely harmful ionizing radiation
If a major error takes place, the damaged cell can self-destruct by means of programmed mobile Demise, termed apoptosis. In case the error Handle procedures fall short, then the mutations will survive and become passed together to daughter cells.