某些癌症类型，如睾丸精原细胞瘤以及不同类型的儿童白血病和淋巴瘤，如果加以适当的治疗，即使癌细胞已经扩散到身体其它部位，治愈率也很高。
癌症的存活率，會因腫瘤長的位置、大小、數目及癌症的分期而有不同，一般來說，只要早期發現，治癒率就越高；根據統計，發現許多癌症零期（原位癌）的病人，五年存活率幾乎接近百分之百，不過存活率會隨著期別愈晚而降低。（延伸閱讀：原位癌是什麼？剖析癌症進化史）
The tissue analysis within the biopsy implies the kind of cell that is proliferating, its histological quality, genetic abnormalities and various capabilities. Jointly, this data is useful To judge the prognosis and to pick the ideal remedy.
Radiation to your breast cuts down the power of that breast to create milk and boosts the threat of mastitis. Also, when chemotherapy is provided following delivery, lots of the medications seem in breast milk, which could hurt the infant.[271]
肿瘤在其生长过程中，虽然能够暂时通过建立新生血管解决自身给养问题，但是快速的增长一样会将之推向资源和空间匮乏的边缘。隨著腫瘤細胞持續生長，在這樣競爭的壓力下，这时肿瘤就会扩散。而这种肿瘤在生长过程中侵略性不断增加的过程则被称为演进（development）。具体的行为则是生长的加快，并且开始入侵周遭的正常组织（癌症浸润），并且通过血管转移到远端（癌症转移）。
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。
Focused therapy is usually a type of chemotherapy that targets unique molecular variations between cancer and usual cells. The very first specific therapies blocked the estrogen receptor molecule, inhibiting The expansion of breast most cancers. Yet another prevalent case in point is The category of Bcr-Abl inhibitors, which are utilized to treat Persistent myelogenous leukemia (CML).
Engraving with two sights of a Dutch lady who had a tumor removed from her neck in 1689 Most cancers has existed for all of human history.[226] The earliest written record relating to cancer is from c. 1600 BC in the Egyptian Edwin Smith Papyrus and describes breast cancer.[226] Hippocrates (c. 460 BC – c. 370 BC) described a number of types of most cancers, referring to them with the Greek term καρκίνος karkinos (crab or crayfish).[226] This title originates from the appearance of the Slash floor of a good malignant tumor, with "the veins stretched on all sides given that the animal the crab has its ft, whence it derives its name".
不受限制的生長（不死，由於有大量端粒酶，細胞不受到細胞凋亡機制的調控）
Some different types of most cancers are named for the scale and condition of your cells under a microscope, such as huge mobile carcinoma, spindle cell carcinoma and compact-cell carcinoma.
The central role of DNA hurt and epigenetic defects in DNA maintenance genes in carcinogenesis The classical view of most cancers is a list of health 癌症 conditions pushed by progressive genetic abnormalities which include mutations in tumor-suppressor genes and oncogenes, and in chromosomal abnormalities. A role for epigenetic alterations was discovered during the early twenty first century.[103]
多數癌症是自發性的（英语：sporadic），但是有些癌症還是與遺傳有關，通常遺傳到缺陷的腫瘤抑制基因時會有較顯著的影響和症狀。舉例而言：
Doable harms within the screening exam: for example, X-ray pictures include publicity to potentially harmful ionizing radiation
手术治疗主要用于去除瘤灶，达到治疗的目的，同时也适用于癌症的预防、诊断、 分期、术后结构重建与功能康复等。这种方法不存在生物抵抗性；无潜在致癌可能； 不受肿瘤差异性影响；能提供准确的病理分期及组织学类型；适用于大部分未扩散 的肿瘤。但是会破坏正常组织；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。