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Cervical dysplasia - Overview

Alternative Names

Cervical intraepithelial neoplasia (CIN); Precancerous changes of the cervix

Definition of Cervical dysplasia:

Cervical dysplasia refers to abnormal changes in the cells on the surface of the cervix that are seen underneath a microscope. The cervix is the lower part of the uterus (womb) that opens at the top of the vagina.

Although these changes are not cancer, they can lead to cancer of the cervix if not treated.

Causes, incidence, and risk factors:

Most cases of cervical dysplasia occur in women ages 25 - 35, although it can develop at any age.

Almost all cases of cervical dysplasia or cervical cancer are caused by human papilloma virus (HPV). HPV is a common virus that is spread through sexual contact. There are many different types of HPV. Some types lead to cervical dysplasia or cancer.

The following may increase your risk of cervical dysplasia:

Becoming sexually active before age 18
Giving birth before age 16
Having multiple sexual partners
Having other illnesses or using medications that suppress your immune system
Smoking

Female reproductive anatomy

Cervical neoplasia

Uterus

Cervical dysplasia - series

Reviewed last on: 2/28/2011
Linda J. Vorvick, MD, Medical Director, MEDEX Northwest Division of Physician Assistant Studies, University of Washington, School of Medicine; Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Bellevue, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

References

Cervical cancer in adolescents: screening, evaluation, and manage- ment. Committee Opinion No. 463. American College of Obstetricians and Gynecologists. Obstet Gynecol. 2010;116:469–72.

ACOG Practice Bulletin No. 99: management of abnormal cervical cytology and histology. Obstet Gynecol. 2008;112(6):1419-1444.

Wright TC Jr, Massad LS, Dunton CJ, et al. American Society for Colposcopy and Cervical Pathology-sponsored Consensus Conference: 2006 consensus guidelines for the management of women with cervical intraepithelial neoplasia or adenocarcihnoma in situ. Am J Obstet Gynecol. 2007;197(4):340-345.

Wright TC Jr, Massad LS, Dunton CJ, et al. American Society for Colposcopy and Cervical Pathology-sponsored Consensus Conference: 2006 consensus guidelines for the management of women with abnormal cervical cancer screening tests. Am J Obstet Gynecol. 2007;197(4):346-355.

Kahn JA. HPV vaccination for the prevention of cervical intraepithelial neoplasia. N Engl J Med. 2009;361:271-278.

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