In a 54-year-old woman with a Pap smear showing low-grade squamous intraepithelial lesion (LSIL) and a negative human papillomavirus (HPV) test, and no known prior cervical abnormalities, what is the appropriate management?

Management of LSIL with Negative HPV in a 54-Year-Old Woman

For a 54-year-old woman with LSIL cytology and negative HPV testing, repeat co-testing (cytology and HPV) in 12 months is the preferred management approach. 1

Rationale and Evidence

The combination of LSIL cytology with negative HPV testing represents a discordant result that warrants careful consideration. This scenario is uncommon, as approximately 71-89% of LSIL cases are HPV-positive 2, and the prevalence of HPV-negative LSIL increases with age—only 56% of women ≥40 years are HPV-positive with LSIL 2.

Risk Assessment

The key consideration here is that HPV-negative LSIL carries a substantially lower risk of significant cervical disease compared to HPV-positive LSIL:

• The 18-month risk of CIN 3+ in women ≥30 years with HPV-negative LSIL is only 1.4% 3
• No cases of cervical cancer were detected at colposcopy within 6 months in HPV-negative LSIL cases 3
• In the largest follow-up study of HPV-negative LSIL, only 3.0% developed HSIL findings, and no cervical cancers were diagnosed 4
• The absolute risk of CIN 3/cancer over 2 years is 2-4% for HPV-negative LSIL versus 13-19% for HPV-positive LSIL 5

Management Options

According to ASCCP 2006 Consensus Guidelines, acceptable options for postmenopausal women with LSIL include 1:

1. Repeat cytology in 12 months (preferred for HPV-negative cases)
2. Repeat cytological testing at 6 and 12 months
3. Colposcopy

The preferred approach is repeat co-testing at 12 months rather than immediate colposcopy, given the low risk profile 1, 4, 3.

Follow-Up Algorithm

At 12-month follow-up:

• If repeat cytology is negative and HPV remains negative: Return to routine screening 1
• If repeat cytology shows ASC-US or greater OR HPV becomes positive: Proceed to colposcopy 1
• If two consecutive cytologic tests are negative: Return to routine cytologic screening 1

Important Caveats

Be aware that HPV-negative LSIL may represent:

• Cytologic misinterpretation (most common) 5
• False-negative HPV testing due to sampling issues 5
• Transient HPV infection that cleared between testing
• At 6-month follow-up, 12-32% of women with initially HPV-negative LSIL subsequently test HPV-positive 5

Do NOT:

• Immediately refer to colposcopy unless there are concerns about patient adherence to follow-up 1
• Perform endocervical curettage as initial management 1
• Treat without histologic confirmation of high-grade disease

Clinical Pearls

The demographic profile of HPV-negative LSIL patients typically includes older age (>35 years) and fewer recent sexual partners, consistent with a lower-risk population 5. At age 54, this patient fits this profile. The negative HPV test provides significant reassurance, as the negative predictive value for CIN 3+ in women ≥40 years with LSIL is 100% 2.

This conservative approach balances the very low cancer risk against the harms of unnecessary colposcopy and potential overtreatment, which is particularly important in this age group where HPV-negative results are more common and carry lower risk 4, 3, 2.