Non small cell lung cancer

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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.

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

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.

CancerEducation
Disseminates educational programming in a multimedia electronic clips format. Aimed at both a lay and professional audience.
CancerTrack
Access to related news, books and links.
Suite 101
Articles and links about cancer treatments.
CancerNausea.com
Presents information to help manage nausea and vomiting caused by chemotherapy or radiation treatments.
Cancer Information Services
Information from the U.S. National Cancer Institute including access to links, press releases and publications.

Non small cell lung cancer