Small cell lung cancer

Resource for Small cell lung cancer and fun search portal . Continue for our current list for the Small cell lung cancer

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)

Cancer is, ultimately, a disease of genes. Typically, a series of several mutations is required before a cell becomes a cancer cell. We distinguish between oncogenes, which promote cancer when "switched on" by a mutation, and tumor suppressor genes, which prevent cancer unless "switched off" by a mutation. These mutations can have various causes: radiation or chemicals called carcinogens; some inherited predisposition is not uncommon; some viruses that can cause cancer have also been described. Usually, they carry in their genome some oncogene or tumor suppressor inactivating gene. In about 15% of all cancers, viruses seem to play a role; Bacteria, like Helicobacter pylori, also induce carcinogenesis by a process of chronic inflammation. Finally, damage by free radicals, which are a natural by-product of oxygen metabolism, can cause mutations in the DNA.

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.

Cancer Rates And Risks
Provides international incidence and mortality rates including information about risk factors. From the U.S. National Cancer Institute.
Cancer Lynx
An online 'zine for patients and professionals.
Cancer Site Finder.com
Offers a searchable database of cancer related websites with descriptions of each. Allows users to search by topic, feature, or quality standard.
On Top Of Cancer
Links-based guide to Internet resource.
Cancerlinksusa.com
Information and links for all types of tumors.

Small cell lung cancer