The Medical Minute: Cervical cancer awareness

Sep 16, 2009 By John Messmer

(PhysOrg.com) -- Science has sought the “cause” of cancer for decades, and in the case of cervical cancer, the cause has been found. The cervix is the opening to the womb that is situated at the upper end of the vagina. Until recently the best approach to cervical cancer was to detect it early with a Pap test performed during a gynecologic examination. While the occurrence of advanced cervical cancer has dropped through widespread use of the Pap test, there are many women in the United States and millions worldwide who do not get or have access to Pap tests. This year in the United States, about 12,000 women will be diagnosed with cervical cancer. Almost 4,000 will die of the disease, which is easily detectable and easily cured, if found early.

The key to is prevention. We now know cervical cancer is caused by the (HPV). There are many strains of HPV - some cause common warts, but four strains are responsible for most cervical cancer and some others cause . Strains that infect the hands and feet do not infect the vagina or , and vice versa. HPV is contracted from other people. In the case of cervical HPV infections, it is contracted by sexual intercourse.

At least half of all sexually active people become infected with at least one strain of HPV. Fortunately, most of these are defeated by a healthy and never cause a problem. Some, however, go on to cause changes that lead to cervical cancer.

Since cervical cancer is sexually transmitted, the earlier begins and the more sex partners a woman has, the greater her risk. Condoms do not reduce risk as they do for other sexually transmitted diseases. Lesbians do not have a lower risk of cervical cancer than heterosexual women and also should be examined annually. Smoking and secondhand exposure increase the risk of cervical cancer, probably by tobacco’s deleterious effects on the immune system.

To reduce the risk of HPV infection in the first place, a vaccine has been approved by the Food and Drug Administration (FDA). The HPV vaccine provides protection against the two most common strains of cancer-causing HPV and two strains that cause genital warts. The three-dose series reduces the risk of cervical cancer by 70 percent and genital warts by 90 percent. Annual Pap tests are still needed, but the chance of an abnormal result is greatly reduced after the vaccine.

The recommendation for vaccination is girls between age nine and 26 years old, ideally before sexual activity, but not limited to those without prior sexual contact. Some argue that abstinence and limiting exposure to one sexual partner is better than a vaccine. Still, it is a risk for parents to withhold vaccination and hope their daughter will follow this restriction. Vaccines are like seat belts - it might not be needed, but if it is, it’s best to have it ahead of time.

One day, cervical cancer might be totally preventable. Until then, the risk of invasive cancer of the cervix can be reduced by vaccination of appropriate women, delay in onset of sexual activity and limiting partners, avoidance of tobacco and annual Pap exams.

More information on cervical cancer can be found at www.cdc.gov/cancer/cervical/

Provided by Pennsylvania State University (news : web)

Explore further: Early hormone therapy may be safe for women's hearts

add to favorites email to friend print save as pdf

Related Stories

Study: Condoms offer HPV protection

Jun 28, 2006

A U.S. study shows the use of a condom while having sex can reduce a woman's risk of acquiring the virus that causes cervical cancer by up to 70 percent.

HPV vaccine reduces abnormal pap test results

Mar 10, 2008

In testing GARDASIL reduced abnormal Pap test results by 43 percent compared to women not given the vaccine, according new research. The findings show the approved anti-HPV agent appears to prevent the development of cell ...

New HPV vaccine under study

Nov 19, 2007

A new vaccine against nine of the most harmful strains of human papillomavirus is under study at the Medical College of Georgia.

Cervical cancer screening: Too many are left unprotected

Sep 19, 2007

The decline in cervical cancer is a success story of cancer research. Although there are reasons to be optimistic about even further decreases in cervical cancer incidence, there still remain some women who are not screened. ...

Recommended for you

Early hormone therapy may be safe for women's hearts

2 hours ago

(HealthDay)—Healthy women at low risk of cardiovascular disease may be able to take hormone replacement therapy soon after menopause for a short time without harming their hearts, according to a new study.

Low yield for repeat colonoscopy in some patients

3 hours ago

(HealthDay)—Repeat colonoscopies within 10 years are of little benefit to patients who had no polyps found on adequate examination; however, repeat colonoscopies do benefit patients when the baseline examination was compromised, ...

Cell's recycling center implicated in division decisions

6 hours ago

Most cells do not divide unless there is enough oxygen present to support their offspring, but certain cancer cells and other cell types circumvent this rule. Researchers at The Johns Hopkins University have now identified ...

User comments : 0