Rabu, 29 Juli 2009

Prostate Cancer Definition,Symptomps,Causes and Treatments

Prostate cancer is a form of cancer that develops in the prostate, a gland in the male reproductive system. The cancer cells may metastasize (spread) from the prostate to other parts of the body, particularly the bones and lymph nodes. Prostate cancer may cause pain, difficulty in urinating, problems during sexual intercourse, or erectile dysfunction. Other symptoms can potentially develop during later stages of the disease.

Rates of detection of prostate cancers vary widely across the world, with South and East Asia detecting less frequently than in Europe, and especially the United States.

Prostate Cancer Symptoms

If the cancer is caught at its earliest stages, most men will not experience any symptoms. Some men, however, will experience symptoms that might indicate the presence of prostate cancer, including:
  • A need to urinate frequently, especially at night
  • Difficulty starting urination or holding back urine
  • Weak or interrupted flow of urine
  • Painful or burning urination
  • Difficulty in having an erection
  • Painful ejaculation
  • Blood in urine or semen
  • Frequent pain or stiffness in the lower back, hips, or upper thighs.

Because these symptoms can also indicate the presence of other diseases or disorders.

Causes Prostate Cancer

Prostate cancer is caused by changes in the DNA of a prostate cancer cell. DNA makes up our genes, which control how cells behave. DNA is inherited from our parents. A small percentage (about 5% to 10%) of prostate cancers is linked to these inherited changes. Prostate cancer may also be linked to higher levels of certain hormones. High levels of male hormones (androgens) may play a part in prostate cancer risk in some men. Some researchers have noted that men with high levels of a hormone called IGF-1 are more likely to get prostate cancer, too. But others have not found such a link. More research is needed in this area.

Prostate biopsy

If cancer is suspected, a biopsy is offered. During a biopsy a urologist or radiologist obtains tissue samples from the prostate via the rectum. A biopsy gun inserts and removes special hollow-core needles (usually three to six on each side of the prostate) in less than a second. Prostate biopsies are routinely done on an outpatient basis and rarely require hospitalization. Fifty-five percent of men report discomfort during prostate biopsy.

Treatment Options.

Certain factors affect prognosis (chance of recovery) and treatment options.
The prognosis (chance of recovery) and treatment options depend on the following:
  • The stage of the cancer (whether it affects part of the prostate, involves the whole prostate, or has spread to other places in the body).
  • The patient’s age and health.
  • Whether the cancer has just been diagnosed or has recurred (come back).
Prognosis also depends on the Gleason score and the level of PSA.

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