Colin cancer

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For most of the cancers, it cannot be told which event was the initial cause. However, with molecular biology, it is possible to characterize the mutations within a tumor, and to a certain extent predict its behavior. For example, about half of the tumors are deficient in the tumor suppressor gene p53, also known as "the guardian of the genome". This is associated with poor prospects for the patient, since those tumor cells are unlikely to go into apoptosis (programmed cell death) after they are damaged by therapy. There are more mutations that make a tumor more malignant. Telomerase mutations enable a tumor cell to divide indefinitely. Other mutations enable the tumor to grow new blood vessels to feed it, or to detach from the surrounding tissue, spreading to other parts of the body.

The term cancer is very broad and covers many different illnesses including:

  • Carcinoma (arising from epithelial cells)
  • Bladder carcinoma
  • Breast cancer
  • Cervical cancer
  • Colorectal cancer (includes colon, rectum, anus, and appendix)
  • Esophageal cancer
  • Endometrial cancer (uterus)
  • Hepatocellular carcinoma (liver)
  • Laryngeal cancer
  • Lung cancer
  • Oral cancer
  • Ovarian cancer
  • Pancreatic cancer
  • Prostate cancer
  • Renal cell carcinoma (kidney)
  • Skin cancer
  • Stomach cancer
  • Testicular cancer
  • Thyroid cancer
  • Sarcoma (arising from connective tissue and related)
  • Gastrointestinal stromal cell tumor (GIST)
  • Rhabdomyosarcoma (muscle)
  • Osteosarcoma (bone)
  • Hematological malignancies (blood and bone marrow)
  • Leukemia
  • Lymphomas
  • Hodgkin's disease
  • Non-Hodgkin's lymphoma
  • Multiple myeloma
  • Miscellaneous
  • Brain tumor
  • Melanoma, Moles and dysplastic nevi
  • Teratoma

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)

  • AllExperts Oncology Q&A
    Comprehensive directory of cancer experts volunteering to answer both general and disease-specific questions.
  • Cancer Advice UK
    Advice and information about diagnosis and treatment issues. Includes leaflets, book suggestions, links and support groups.
  • ACS: Statistics
    American Cancer Society presents an array of related statistics.
  • CancerSource
    Provides information about prevention, detection, diagnosis, treatment and symptom management. Offers access to news, support groups and email lists.
  • CancerCare
    Topics of interest to patients and their families including treatment side-effects, pain control, nutrition and bereavement.