Different types of cancer

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The field of medicine concerned with the treatment of cancer is oncology. Cancer has become an important problem with the rise in life expectancy, as the abovementioned mutations become more likely the longer a person lives. Though great progress in treatment has been made, most cancers in advanced stages remain incurable and ultimately fatal.

Malignant tumors such as carcinoma or sarcoma, lymphoma or leukemia originate from a cell or a group of cells in a multicellular organism that has several distinct properties:

evading apoptosis
Unlimited Growth Potential
self-sufficiency of growth factors
insensitivity to anti-growth factors
increased cell division rate
altered differentiation (specialization) ability
no ability for contact inhibition
ability to invade neighbouring tissue
ability to build metastases
ability to promote blood vessel growth (angiogenesis)

Treatment of cancer typically involves surgery to remove tumors and nearby lymph nodes to which the cancer may have spread, combined with radiation therapy and/or chemotherapy. The latter two target cells in the body that are rapidly dividing. This includes the cancer cells but also certain healthy ones, which is the reason for the severe side effects of these treatments.

Cancer Lynx
An online 'zine for patients and professionals.
Cancer Network.com
Information resource aimed at health professionals. Requires registration.
InteliHealth: Cancer
Medical information, articles and news covering a variety of tumors and related issues.
DIPEx: Cancer
Includes audio and video interviews of patient experiences.
About.com: Cancer
Presents general overview information on many of the main kinds of tumors. Includes news, doctor search, glossary and access to support hotlines.

Different types of cancer