Applies ASCCP cervical cancer screening guidelines with HPV co-testing and colposcopy indications. Use when managing cervical screening, applying ASCCP guidelines, or determining colposcopy need.
Applies ASCCP risk-based cervical cancer screening guidelines, Bethesda System cytology classification, HPV co-testing protocols, and colposcopy indications for evidence-based cervical cancer prevention.
Cervical cancer is a largely preventable disease through screening and HPV vaccination. The 2019 ASCCP Risk-Based Management Consensus Guidelines replaced the prior algorithm-based approach with a risk-estimation framework where management is determined by the patient's estimated risk of CIN 3+ rather than by individual test results alone. The Bethesda System for Reporting Cervical Cytology provides the standardized terminology (ASC-US, LSIL, HSIL, AGC, etc.) that clinicians must use when documenting results.
Errors in screening management — over-screening low-risk patients, under-screening high-risk patients, or failing to refer for colposcopy when indicated — contribute to both unnecessary procedures and missed cancers. This skill ensures that every screening decision follows the ASCCP risk thresholds and is properly documented.
Per USPSTF/ACOG/ACS/ASCCP recommendations:
| Age Group | Screening Recommendation |
|---|---|
| < 21 years | No screening regardless of sexual history or HPV vaccination |
| 21–24 years | Cytology alone every 3 years; NO HPV co-testing |
| 25–29 years | Cytology every 3 years, OR HPV primary screening every 5 years (per ACS 2020 update) |
| 30–65 years | Cytology + HPV co-testing every 5 years (preferred), OR cytology alone every 3 years, OR HPV primary screening every 5 years |
| > 65 years | Discontinue if adequate prior screening (3 consecutive negative cytology or 2 consecutive negative co-tests in prior 10 years, most recent within 5 years) and no history of CIN 2+ in prior 25 years |
| Post-hysterectomy (with cervix removed) | Discontinue if no history of CIN 2+ and cervix fully removed |
Special populations:
| Bethesda Category | Meaning | Clinical Significance |
|---|---|---|
| NILM | Negative for intraepithelial lesion or malignancy | Normal result |
| ASC-US | Atypical squamous cells of undetermined significance | Mildly abnormal; reflex HPV testing indicated |
| ASC-H | Atypical squamous cells, cannot exclude HSIL | Higher concern; colposcopy recommended |
| LSIL | Low-grade squamous intraepithelial lesion | Corresponds to HPV effect / CIN 1 |
| HSIL | High-grade squamous intraepithelial lesion | Corresponds to CIN 2/3; colposcopy required |
| AGC | Atypical glandular cells | Requires colposcopy + endocervical curettage ± endometrial biopsy |
| AIS | Adenocarcinoma in situ | Requires colposcopy, ECC, and excisional procedure |
| SCC | Squamous cell carcinoma | Invasive cancer — urgent gynecologic oncology referral |
Management is based on the estimated CIN 3+ risk using current and prior test results:
| Estimated CIN 3+ Risk | Recommended Action |
|---|---|
| < 0.15% | Return to routine 5-year screening |
| 0.15–0.54% | Return in 3 years for repeat testing |
| 0.55–3.9% | Return in 1 year for repeat testing |
| 4.0–24% | Colposcopy recommended |
| 25–59% | Colposcopy with biopsy; treatment acceptable |
| 60–100% | Excisional treatment recommended (LEEP or cold knife cone) |
Key clinical action thresholds:
When colposcopy is performed, document: