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Cervical Intraepithelial Neoplasia


  • abnormal findings on cervical biopsy

  • grades 1-3

CIN 1

  • some treat CIN 1

  • CIN 1

    • 14% to CIN 3

    • 26% CIN 1

    • 60% regress

  • see CIN 1 in 6 months

CIN 2 and 3

  • CIN 3 30-80% untreated women will develop invasive cancer - mean interval 7.8 years

  • CIN 2 and CIN 3 usually treated by LLETZ (loop excision)