Cervical precancer refers to abnormal changes in the cells of the cervix that can develop into cervical cancer if left untreated. The good news is that these changes can often be detected early through screening and treated before cancer develops.
Understanding the journey from screening to treatment and follow-up is an important part of cervical cancer prevention.
Screening: The First Step
Cervical cancer screening helps identify women who may have HPV infection or abnormal cervical cells before cancer develops.
Screening may involve:
- HPV testing, which detects high-risk types of human papillomavirus associated with cervical cancer.
- Pap testing (cytology), which looks for abnormal cervical cells.
- HPV and Pap testing together, depending on the screening guidelines used.
An abnormal screening result does not mean that you have cervical cancer. It simply indicates that further evaluation may be needed.
What happens next depends on the person’s age, HPV result, previous screening history, and the severity of the abnormality. Some women may only need repeat testing, while others may need a closer examination called a colposcopy.
Diagnosis and Colposcopy
A colposcopy allows a healthcare professional to examine the cervix under magnification and identify areas that may be abnormal.
If a suspicious area is found, a small tissue sample called a biopsy may be taken and examined in a laboratory.
The biopsy helps determine whether cervical precancer is present and, if so, how severe it is.
Cervical intraepithelial neoplasia (CIN) is commonly classified as:
- CIN 1: Mild changes that often disappear without treatment.
- CIN 2: Moderate or high-grade changes that may require treatment or, in selected cases, careful observation.
- CIN 3: Severe precancerous changes that generally require treatment.
The appropriate approach depends on the individual’s circumstances and clinical risk.
Treatment Options
Not every abnormal cervical result needs immediate treatment. When treatment is necessary, the goal is to remove or destroy abnormal cells before they progress to cancer.
Two main approaches are used:
Ablative Treatment
Ablative treatments destroy abnormal tissue without removing it. Examples include:
- Cryotherapy, which uses extreme cold.
- Thermal ablation, which uses controlled heat.
These treatments can be effective for appropriately selected cervical precancerous lesions.
Excisional Treatment
Excisional procedures remove the abnormal tissue. Common examples include:
- LEEP/LLETZ, which removes abnormal tissue using a thin heated wire loop.
- Cone biopsy, which removes a larger, cone-shaped section of cervical tissue.
Excisional treatment also provides tissue that can be examined by a pathologist, which can be important when the extent or nature of the abnormality needs further assessment.
The choice between observation, ablation, or excision depends on the severity and location of the lesion, the patient’s medical history, pregnancy status, future fertility plans, and other factors.
Follow-Up After Treatment
Treatment does not mean that follow-up is no longer necessary.
Women who have been treated for high-grade cervical precancer may remain at increased risk of developing cervical abnormalities in the future. Follow-up testing, particularly HPV-based testing, is therefore an important part of care.
The timing of follow-up depends on the original diagnosis, treatment received, and subsequent test results. Some patients require long-term surveillance rather than immediately returning to routine screening.
Following the recommended schedule is important because persistent or recurrent HPV infection can lead to new cervical abnormalities.
Prevention Still Matters
Cervical cancer prevention does not end with treatment.
Important preventive measures include:
- Keeping up with recommended cervical screening.
- Completing all follow-up appointments after an abnormal result or treatment.
- Receiving HPV vaccination when eligible.
- Avoiding smoking, which can increase the risk of persistent HPV infection and cervical disease.
- Seeking medical evaluation for unusual vaginal bleeding or other concerning symptoms.
The Bottom Line
Cervical precancer is treatable, and detecting it early provides an opportunity to prevent cervical cancer.
The process usually involves screening, risk assessment, diagnosis, treatment when necessary, and continued follow-up.
An abnormal screening result does not automatically mean cancer. What matters most is completing the recommended evaluation and following the treatment and surveillance plan provided by your healthcare professional.
References
- World Health Organization (WHO). WHO guideline for screening and treatment of cervical pre-cancer lesions for cervical cancer prevention.
- American College of Obstetricians and Gynecologists (ACOG). Screening for Cervical Cancer.
- Perkins RB, et al. 2019 ASCCP Risk-Based Management Consensus Guidelines for Abnormal Cervical Cancer Screening Tests and Cancer Precursors. Journal of Lower Genital Tract Disease.
