Cervical Dysplasia (cont.)

Typically, cervical dysplasia does not produce any signs or symptoms. So regular screening is important for early diagnosis and treatment.

Screening for cervical dysplasia

Cervical dysplasia and cervical cancer generally only develop over a period of years, so regular screening is essential to detect and treat early precancerous changes and prevent cervical cancer. Traditionally, the Papanicolaou test (Pap test or Pap smear) has been the screening method of choice. To perform the Pap smear, the health care practitioner removes a swab or brush sample of cells from the outside of the cervix during a pelvic examination using a speculum in the vagina for visualization. The cells are smeared onto a glass slide, stained, and observed under the microscope for any evidence of dysplasia or cancer.

Newer, liquid-based systems to screen samples of cervical cells are also available and are effective screening tools for detection of dysplasia. The samples for this test are removed as for the conventional Pap smear, but the sample is collected in a vial of liquid that is later used to prepare a microscope slide for examination as with the Pap smear.

Further testing

For women whose initial screening result is unclear or abnormal, other diagnostic tests are used:

• 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. 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. Colposcopy is a safe procedure with no complications other than mild vaginal spotting of blood.
  
  
• Biopsies are tissue samples obtained for examination under the microscope A biopsy may be taken of suspicious areas seen during colposcopy.
  
  
• HPV testing to detect whether or not HPV infection with a "high-risk" HPV type is present may be recommended for some women. This may be particularly useful if the results from regular screening tests are ambiguous, such as results suggesting atypical squamous cells of uncertain significance or ASC-US (see below). Because of the number of women infected with HPV in general and because the infection can be temporary and short-lived, regular screening of all women for HPV infection is not thought to be useful and is not routinely performed in the U.S.

Source: MedicineNet.com
http://www.medicinenet.com/cervical_dysplasia/article.htm