Canine cancer

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Cancers are capable of spreading through the body by two mechanisms: local invasion and distant metastasis. Invasion refers to the direct migration and penetration by cancer cells into neighboring tissues. Metastasis refers to the ability of cancer cells to penetrate into lymphatic and blood vessels, circulate through the bloodstream, and then invade normal tissues elsewhere in the body. Cancer is most deadly when it metastasizes.

In medicine, cancer is a general term for any of a number of different diseases where some of the body's own cells divide in an uncontrolled manner. The resulting new cells can form a malignant tumor (a neoplasm) or propagate throughout the body.

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)

  • CancerSupportChat.org
    Presents access to online discussion, chat and support.
  • Imperial Cancer Research Fund
    News and information about the prevention, diagnosis and treatment of this condition. A UK charity site.
  • Ladies Home Journal: Cancer
    Links to articles about skin and breast tumors.
  • CancerExperts MD
    Physcians located in Boston offer second opinions and personalized case reviews. Provides an online ask-a-doctor service.
  • CancerSource
    Provides information about prevention, detection, diagnosis, treatment and symptom management. Offers access to news, support groups and email lists.