Wednesday, April 8, 2009

What is a Cancer


Cancer (medical term: malignant neoplasm) is a class of diseases in which a group of cells display uncontrolled growth (division beyond the normal limits), invasion (intrusion on and destruction of adjacent tissues), and sometimes metastasis (spread to other locations in the body via lymph or blood). These three malignant properties of cancers differentiate them from benign tumors, which are self-limited, do not invade or metastasize. Most cancers form a tumor but some, like leukemia, do not. The branch of medicine concerned with the study, diagnosis, treatment, and prevention of cancer is oncology.

Cancer may affect people at all ages, even fetuses, but the risk for most varieties increases with age.Cancer causes about 13% of all deaths. According to the American Cancer Society, 7.6 million people died from cancer in the world during 2007. Cancers can affect all animals.

Nearly all cancers are caused by abnormalities in the genetic material of the transformed cells[citation needed]. These abnormalities may be due to the effects of carcinogens, such as tobacco smoke, radiation, chemicals, or infectious agents. Other cancer-promoting genetic abnormalities may be randomly acquired through errors in DNA replication, or are inherited, and thus present in all cells from birth. The heritability of cancers are usually affected by complex interactions between carcinogens and the host's genome. New aspects of the genetics of cancer pathogenesis, such as DNA methylation, and microRNAs are increasingly recognized as important.

1 comment:

  1. Most prostate cancers are adenocarcinomas, cancers that arise in glandular cells of the prostate’s epithelial tissue. Prostate cancers usually progress slowly and produce no symptoms in the initial stages. Eventually, the tumor may enlarge like mine use too, the prostate gland, pressing on the urethra and causing painful or frequent urination and blood in the urine. So I was so uncomfortable with this prostate cancer diseases then I decided to do online search on how to cure cancer because I well have read a lot about herbal medicine, I came across a lot of testimony how Dr Itua cure HIV/herpes then Cancer was listed below the comment.with courage I contacted Dr Itua and he sent me his herbal medicine through Courier service then I was asked to pick it up at my post office which i quickly did. I contacted Dr Itua that i have received my herbal medicine so he instructs me on how to drink it for three weeks and that is how Dr Itua Herbal Medicine cure my prostate Cancer, The treatment takes three weeks and I was cured completely. Dr Itua is a god sent and I thank him every day of my life. Contact him now On:Email:drituaherbalcenter@gmail.com/   Whatsapp:+2348149277967.
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