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February 8, 2012

Colposcopy

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What is colposcopy?

Colposcopy is a gynecological procedure that illuminates and magnifies the vulva, vaginal walls, and uterine cervix in order to detect and examine abnormalities of these structures. The cervix is the base of the womb (uterus) and leads out to the birth canal (vagina). During colposcopy, special tests [acetic acid wash, use of color filters, and sampling (biopsy) of tissues] can be done. Colposcopy is not to be confused with culdoscopy, which is the insertion of an instrument through the wall of the vagina in order to view the pelvic area behind the vagina.

Why is colposcopy done?

Colposcopy is usually done in one of two circumstances: to examine the cervix either when the result of a Pap smear is abnormal, or when the cervix looks abnormal during the collection of a Pap smear. Even if a Pap smear result is normal, colposcopy is ordered when the cervix appears visibly abnormal to the clinician performing the Pap smear. The purpose of the colposcopy is to determine what is causing the abnormal looking cervix or the abnormal Pap smear so that appropriate treatment can be given.

How is colposcopy done?

A colposcope is a microscope that resembles a pair of binoculars. The instrument has a range of magnification lenses. It also has color filters that allow the physician to detect tiny abnormal blood vessels on the cervix. The colposcope is used to examine the vaginal walls and cervix through the vaginal opening.

  • The first step of the procedure is examining the vulva and vagina for signs of genital warts or other growths. (Genital warts are caused by the human papilloma virus (HPV), which is a sexually transmitted virus that causes cervical cancer.)

  • A Pap smear is then taken.

  • The cervix is inspected and the special tests are done (see below).

Colposcopy is a safe procedure with no complications other than vaginal spotting of blood.

The examiner wants to get a good look at the squamocolumnar junction, which is the area of the cervix that gives rise to most cases of cervical cancer. The term squamocolumnar junction refers to the border between the two different types of cells (squamous cells and columnar cells) that normally form the lining of the endocervical canal. (This canal connects the cervix with the main part of the uterus.) Most cases of cervical cancer originate from the squamous cells and, therefore, are referred to as squamous cell cervical cancer.

During colposcopy, the entire squamocolumnar junction is more likely to be seen in young women. The reason for this is that after menopause, the squamocolumnar junction tends to migrate inside the endocervical canal. Colposcopy, therefore, is often not adequate in women after menopause. Therefore, if the whole squamocolumnar junction area of the cervix is not visible on colposcopy, another type of procedure may need to be performed that allows the entire squamocolumnar junction to be examined. (See cold knife cone biopsy below.)



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  • Related Diseases & Conditions

    • Sexually Transmitted Diseases in Women (STDs)
      • Sexually transmitted diseases, or STDs, are infections that are transmitted during any type of sexual exposure, including intercourse (vaginal or anal), oral sex, and the sharing of sexual devices, such as vibrators. Women can contract all of the STDs, but may have no symptoms, or have different symptoms than men do.
    • Cervical Cancer
      • Cervical cancer is cancer of the entrance to the womb (uterus). Regular pelvic exams and Pap testing can detect precancerous changes in the cervix. Precancerous changes in the cervix may be treated with cryosurgery, cauterization, or laser surgery. The most common symptom of cancer of the cervix is abnormal bleeding.
    • Menopause
      • Menopause is the time in a woman's life when menstrual periods permanently stop, also called the “change of life." Menopause symptoms include hot flashes, night sweats, irregular vaginal bleeding, vaginal dryness, painful intercourse, urinary incontinence, weight gain, and emotional symptoms such as mood swings. Treatment of menopausal symptoms varies, and should be discussed with your physician.
    • Cervical Dysplasia
      • Cervical dysplasia is a condition in which the cells of the inner lining of the cervix have precancerous changes. There are two types of cervical dysplasia; 1) squamous intraepithelial lesion, and 2) cervical intraepithelial neoplasia. Cervical dysplasia is caused by infection of the cervix with HPV (human papillomavirus). There are various diagnostic measures for cervical dysplasia. Treatment generally depends upon the progression of the dysplasia, mild, moderate, or severe.
    • Genital Warts (HPV)
      • Human papillomavirus (HPV) infection is the most common sexually transmitted infection in the U.S. HPV is primarily transmitted by sexual contact. While some people develop warts in the genital region after infection, others experience no symptoms. Though genital warts can be removed, there is no cure for HPV infection. There is a vaccine to prevent infection from four common HPV types.
    • Vaginal Cancer
      • Vaginal cancer is fairly uncommon. There are two types of vaginal cancer: squamous cell carcinoma and adenocarcinoma. Risk factors include being 60 or older, exposure to DES while in the womb, HPV infection, and having a history of abnormal cervical cells. Painful intercourse, pelvic pain, vaginal lumps, and abnormal vaginal bleeding or discharge are all symptoms of vaginal cancer. Treatment depends upon the stage of the vaginal cancer and may involve surgery, radiation therapy, chemotherapy, and the use of radiosensitizers.
    • Sexual Health
      • Sexual health information including birth control, impotence, herpes, sexually transmitted diseases, staying healthy, women's sexual health concerns, and men's sexual health concerns. Learn about the most common sexual conditions affecting men and women.
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