If you have an abnormal Pap test result, some of the terms used can be confusing and may be a cause for concern if the meaning is not clear. So Women First wants you to know how we define Pap test results to help you understand the terminology being used and what follow-up may be needed.
The cytologist report at Women First uses the “Bethesda System” to describe Pap test results. This system uses the term squamous intraepithelial lesion (SIL) to describe pre-cancer changes. “Squamous” refers to the type of cells that make up the tissue that covers the cervix. With this system, your results will be placed in one of several groups:
- Normal (negative)—there are no signs of cancer of pre-cancer.
- Atypical Squamous Cells of Undetermined Significance (ASCUS)—changes in the cervical cells have been found. HPV typing may be indicated depending upon age and, if positive, would then result in a recommendation for a colposcopy.
- Low Grade changes (LGSIL) or Mild Dysplasia almost always indicates that an HPV infection is present, but it also may indicate mild pre-cancer changes. This would then require a colposcopy with or without a biopsy, depending upon findings on exam. LGSIL is very common and usually goes away on its own without treatment.
- High Grade changes (HGSIL) or Severe Dysplasia indicates more serious changes. This would require a colposcopy exam with biopsy.
- Atypical Squamous Cells cannot exclude High Grade (ASC-H)—changes in the cervical cells have been found. These changes are not clearly HGSIL but could be. This would require a colposcopy exam with biopsy.