癌症有超過一百個種類，一般可依據癌細胞原發部位來分類，例如肺癌、乳癌等；另外能根據不同組織或細胞做以下分類：
Veterinary oncology, concentrating mainly on cats and canines, is a escalating specialty in wealthy international locations and the main varieties of human remedy which include surgery and radiotherapy can be provided.
Cancers are frequently named making use of -carcinoma, -sarcoma or -blastoma like a suffix, Using the Latin or Greek word for the organ or tissue of origin as the basis. For example, cancers in the liver parenchyma arising from malignant epithelial cells is known as hepatocarcinoma, while a malignancy arising from primitive liver precursor cells is known as a hepatoblastoma along with a most cancers arising from Body fat cells is termed a liposarcoma.
註解：癌細胞將於所到之處繼續失控的繁殖。舉例：若肺癌細胞轉移到肝臟，則肝臟將出現不斷增生的肺部細胞（不具肺功能），且此細胞具有入侵正常肝臟細胞的能力，導致肝功能不斷降低；反之，不具入侵能力但失控繁殖的細胞，稱為良性腫瘤。
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。
活體組織切片後取下的組織，經染色後由病理醫師判讀，此圖所示為惡性黑色素瘤之切片 病患可能經由許多症狀或檢驗結果被懷疑罹患癌症，但診斷惡性腫瘤最確定的方式就是經由病理醫師對活體組織切片或經手術取得的組織做病理檢查來證實癌細胞的存在。許多活體組織切片，例如皮膚、乳房或肝臟等，在醫師的診療室內即可取得。但是其他器官的切片，則需要在麻醉情形下在手術室進行。
現代人工作忙碌，飲食習慣差，多為外食、重口味並常延遲用餐，加上生活壓力大、熬夜、作息不穩定，以及長期久坐、缺乏運動等，這些不良生活習慣都會增加罹癌風險。
This is predicated on the blamers' perception that the world is fundamentally just and so any harmful illness, like cancer, have to be a sort of punishment for bad choices, since inside a just world, terrible items would not happen to very good individuals.[246]
The Dutch professor Francois de la Boe Sylvius, a follower of Descartes, 癌症 believed that all disorder was the outcome of chemical procedures and that acidic lymph fluid was the cause of most cancers. His modern day Nicolaes Tulp thought that cancer was a poison that gradually spreads and concluded that it absolutely was contagious.[230]
癌症是一種複雜的疾病，其特徵是異常細胞在體內不受控制地生長和擴散。要徹底了解什麼是癌症，重要的是要探索細胞生長、腫瘤形成、良惡性腫瘤分化以及癌細胞如何在全身擴散所涉及的基本過程。 所有癌症我們的使命是提供明確、富有同情心的支持和專門針對每位患者需求的全面護理。 癌症是如何發展的
Palliative care might be baffled with hospice and therefore only indicated when people solution conclude of lifestyle. Like hospice care, palliative treatment attempts that can help the individual cope with their immediate requires and to extend ease and comfort.
Vous cherchez une assurance et vous souhaitez sonder préalablement le marché? Cliquez sur le bouton ci-dessous et sélectionnez l’assurance pour laquelle vous souhaitez un calcul et une simulation de prix.
天生的基因突变。您天生可能就有继承自父母的基因突变。这种突变占癌症的一小部分。
方法为基础，通过有针对性的国家支持、区域网络和全球行动，支持各国政府提高儿童癌症的存活率；