2010-02-27 11:31:40 -
Cervical cancer is one of the most common cancers that affect a woman's reproductive organs. Various strains of the human papillomavirus (HPV), a sexually transmitted infection, play a role in causing most cases of cervical cancer.
Cervical cancer
When exposed to HPV, a woman's immune system typically prevents the virus from doing harm. In a small group of women, however, the virus survives for years before it eventually converts some cells on the surface of the cervix into cancer cells. Half of cervical cancer cases occur in women between ages 35 and 55.
Causes of Cervical Cancer
In general, cancer begins when healthy cells acquire a genetic mutation that turns normal cells into abnormal cells. Healthy cells grow and multiply at a set rate, eventually dying at a set time. Cancer cells grow and multiply out of control, and they don't die. The accumulating abnormal cells form a mass (tumor). Cancer cells invade nearby tissues and can break off
from an initial tumor to spread elsewhere in the body (metastasize).
Cervical cancer most commonly begins in the thin, flat cells that line the bottom of the cervix (squamous cells). Squamous cell carcinomas account for about 80 percent of cervical cancers. Cervical cancer can also occur in the glandular cells that line the upper portion of the cervix. Called adenocarcinomas, these cancers make up about 15 percent of cervical cancers. Sometimes both types of cells are involved in cervical cancer. Very rare cancers can occur in other cells in the cervix...
If you experience any unusual signs and symptoms that worry you, make an appointment with your doctor. Talk to your doctor about when to begin screening for cervical cancer. The American College of Obstetricians and Gynecologists recommends that girls have their first visit with an obstetrician-gynecologist between ages 13 and 15 to discuss sexual activity and ways to prevent sexually transmitted infections, such as HPV
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