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Cervical Cancer – How to Interpret Abnormal Pap Smear Results

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What does an abnormal Pap smear mean?

A Pap smear allows your doctor to look at the cells from your cervix (the lower part of your womb) and see if there are any problems, such as cancer. An abnormal Pap smear means that the cells of your cervix have shown some slightly abnormal changes. Some abnormal cells are more likely than others to be cancerous. If your Pap smear is abnormal, ask your doctor which of the following changes you have.

ASC

ASC stands for atypical squamous cells. Squamous cells form the surface of your cervix. ASC is divided into two categories:

  • ASC-US means ASC with “uncertain significance”: Although some of your cells are not normal, your healthcare provider may not know why the cells changed or what impact it will have on you. These changes are usually not serious and may be caused by a vaginal infection or infection with a virus called HPV (human papillomavirus). Your healthcare provider may want to do a follow-up examination such as a repeat Pap smear or HPV testing.
  • ASC-H means ASC with possible HSIL: Some of your cells are not normal and there is a small possibility that they may be precancerous. Your healthcare provider will probably want to perform a colposcopy, which will allow your healthcare provider to more closely examine your cervix.

AGC

AGC stands for atypical glandular cells. Glandular cells are cells that produce mucus and are located in your cervix or uterus. These results mean that some of your glandular cells are not normal, but your healthcare provider does not know why. These changes are usually more serious. People who have AGC can have a higher risk for cervical cancer. Your healthcare provider will probably want to perform a colposcopy to examine any irregular tissue.

LSIL

LSIL stands for low-grade squamous intraepithelial lesion. Low-grade means there are early changes in the size and shape of the cells. LSILs are often associated with the presence of HPV, which may also cause genital warts. You can be infected with HPV even if you or your partner have never had visible warts. Your healthcare provider will probably perform a colposcopy, HPV testing or recommend a repeat Pap smear.

HSIL

HSIL stands for high-grade squamous intraepithelial lesion. High-grade means the cells are very different from normal cells. These cells are usually precancerous and are more likely to lead to cervical cancer. Your healthcare provider will probably perform a colposcopy to determine how at risk you are for cancer.

Squamous Cancer Cells

If the cells on the Pap smear appear extremely abnormal, it is likely you have cancer cells in your vagina, cervix or uterus. Your healthcare provider will perform additional testing and then will talk to you about possible treatment options.

Inflammation

If inflammation is present in the cells on the Pap smear, it means that some white blood cells were seen on your Pap smear. Inflammation of the cervix is very common and usually does not mean there is a problem. If the Pap smear showed the inflammation is severe, your healthcare provider may want to find the cause, such as an infection. Your healthcare provider may also recommend a repeat Pap smear to see if the inflammation has improved or cleared up completely.

Hyperkeratosis

Hyperkeratosis is a finding of dried skin cells on your Pap smear. This change in the cells of the cervix often occurs from using a cervical cap or diaphragm or from having a cervical infection. Hyperkeratosis rarely needs any more evaluation than a repeat Pap smear in 6 months to 1 year. If the hyperkeratosis is still present on the repeat Pap smear, your healthcare provider may want to perform another Pap smear or perform a colposcopy.

FOR MORE INFORMATION

Canadian Cancer Society
http://www.cancer.ca

Written by familydoctor.org editorial staff.

Revised/Updated: 08-01-2010

Created: 08-01-2000

This handout provides a general overview on this topic and may not apply to everyone. To find out if this handout applies to you and to get more information on this subject, contact your family healthcare provider.

Copyright (c) by the American Academy of Family Physicians

Permission is granted to print and photocopy this material for non-profit educational uses.

Written permission is required for all other uses, including electronic uses.

Nova Scotia Telecare, Reviewed by Clinical Services Working Group, July 2019

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