Persistent CIN1 V2

14.05.2026 Prof. Dr. Cihan Kaya

Persistent CIN 1 (CIN 1 Persisting After 1 Year) Management

What is the Condition?

A smear or biopsy result still showing CIN 1 after 1 year indicates the persistence of the lesion. This condition is generally considered low-risk.

Important Information

The majority of CIN 1 lesions regress spontaneously within 1–2 years. However, persistence requires more careful follow-up.

What Should Be Done?

• Follow-up for another 12 months (smear + HPV test)
• Re-evaluation with colposcopy if necessary

Approach Based on HPV Status

• HPV negative: low risk, routine follow-up
• HPV positive: close follow-up or colposcopy

When is Intervention Necessary?

• If the lesion persists for 2 years
• If it progresses to CIN 2 or CIN 3
• If the patient cannot adhere to follow-up

Treatment Options

• Treatment is usually not required
• In necessary cases, LEEP or excisional methods may be applied

Clinical Fact

Persistent CIN 1 usually follows a benign course, but regular follow-up is very important.

Conclusion

CIN 1 persisting after 1 year is generally followed. The decision for treatment is made in cases of 2-year persistence or progression.

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