[Therapy for cervical intraepithelial neoplasia and fertility]

We reviewed the case records of patients of childbearing age treated with various types of surgical techniques for cervical intraepithelial neoplasia (CIN) to determine the impact of surgical treatment on their fertility.

Between 1983 and 1997 a total of 486 women with CIN received surgical treatment at out unit. Laser vaporization was used in 196 cases, cold-knife conization in 163 and REP in 127. The outcome of the various treatments was then compared.

Independent of the surgical technique used, the percentage of pregnancies achieved after surgery was high: 93.33 and 96.66% of patients treated with laser vaporization and REP, respectively, and 87.69% of those who received cold-knife conization. The differences did not reach statistical significance nor were significant differences observed in the number of abortions or in the method of birth delivery (spontaneous, Cesarean section). However, a higher percentage of premature births was noted among women who received cold-knife conization (31.57%), which was statistically significant in the comparison among the three groups.

The results from our study indicated which techniques for the treatment of CIN may be preferable. Compared with the other two techniques, cold-knife conization bears higher costs (hospitalization, general anesthesia) and has been superceded by laser vaporization and REP as evaluated in this series. When cold-knife conization must be used, cerclage of the cervix uteri should be performed in the event of future pregnancy. In contrast, laser vaporization and REP can be performed in an outpatient setting with local anesthesia. These techniques, because they are conservative, afford the advantages of complete lesion removal and maintenance of reproductive capability. Another important consideration is that REP is less costly and allows histological examination of the surgical specimen.