癌細胞擴散至距離原始腫瘤遙遠的器官及組織。此時癌細胞流竄於全身，必需借助循環全身的化學治療藥物治療。安寧照護將是治療選項之一。
癌症的常用治疗方式包括外科手术、化疗、放疗等，必要时也会结合靶向治疗、生物治疗等方法。治疗后的预后取决于癌症的种类、阶段、患者的一般健康状况等因素。癌症的预防主要依赖于健康的生活方式，如均衡饮食，积极锻炼，避免烟草和过度饮酒，定期检查等。
Multiple national healthcare recommendations advocate early palliative care for people whose most cancers has produced distressing indications or who have to have enable coping with their sickness.
三级预防是治疗后的康复，防止病情恶化，提高生存质量，减轻痛苦，延长生命。
腫瘤較大但尚未擴散（癌細胞尚可被定位、手術移除，可能不需借助循環全身的化學藥物治療）
以放疗为主要手段来杀灭瘤细胞，达到治愈的目的。适用于鼻咽癌、头颈部癌症、前列腺癌、宫颈癌、肛管癌、肺癌、食管癌、恶性淋巴瘤、皮肤鳞癌、骨巨细胞瘤等。
[a hundred and five] Every single of those alterations regulates gene expression without having altering the fundamental DNA sequence. These adjustments may perhaps remain through cell divisions, endure for numerous generations, and will be regarded as reminiscent of mutations.
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Genetic modifications can happen at distinctive amounts and by distinctive mechanisms. The get or lack of an entire chromosome can arise by way of errors in mitosis. A lot more widespread are mutations, which are modifications from the nucleotide sequence of genomic DNA.
出血：瘤体快速增大可致破裂出血，如肺癌有痰中带血、咯血等表现，胃肠癌则有呕血、黑便、血便等症状，肾癌、膀胱癌表现为血尿，妇科肿瘤则表现为阴道出血等。
神經膠質瘤：由神經膠質細胞變化成腫瘤，神經膠質細胞也是最主要的一種腦細胞類型。
The Dutch professor Francois de la Boe Sylvius, a follower of Descartes, thought that all disease was the end result of chemical processes and that acidic lymph fluid was the cause of most cancers. His modern day Nicolaes Tulp believed that most cancers was a poison that slowly spreads and concluded that it had been contagious.[230]
Look at the each day 癌症 pursuits as soon as you get there so you're able to prepare your day about them! There are feeding ordeals, and even a fun carousel!
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。