Lung cancer

Resource for Lung cancer and fun search portal . Continue for our current list for the Lung cancer

Love Poems, Love Calculator

Arts And Entertainment

Health And Fitness

Home Based Business

Self Improvement

Dating, Love, Sexuality

Relationships

Funny Pictures

MSN Nick Names,Display Pictures,Emoticons,Background

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)

Carcinogenesis (lit.: creation of cancer) is the process of derangement of the rate of cell division.

A cell that degenerates into a tumor cell does usually not acquire all these properties at once, but its daughter cells are selected to build them. This process is called cellular evolution. A first step in the development of a tumor cell is usually a small change in the DNA, often a point mutation, which leads, among other things, to a genetic instability of the cell. The instability increases to a point where the cell loses whole chromosomes, or has double ones. Also, the DNA methylation pattern of the cell changes, activating and deactivating genes more or less at random. Cells that divide at a high rate, such as stem cells, show a higher risk of becoming tumor cells than those which divide less or not at all, for example neurons. If the initial tumor cell (or group of tumor cells) is not removed by the immune system, it will develop into cancer.

  • ACOR Support
    Links-based listing by the Association of Online Cancer Resources.
  • Best Practices: Cancer Prevention And Control
    National Governor's Association resource designed to provide a clearinghouse of standards related to tumor care.
  • The Cancer Letter
    Periodical which supplies news and current information about the state of research and treatment.
  • OncoLink
    Extensive information including news, prevention, clinical trials, conferences and psychosocial support from the University of Pennsylvania Cancer Center.
  • Cancer Mondial
    The International Agency for Research on Cancer provides access to reports and databases on occurrence and characteristics.