Outcome of pregnancy after cone biopsy--a case-control study

In a case-control study on 79 cone biopsy treated women under 35 yr of age the subsequent pregnancies were followed. The women of the control group were matched to maternal age, parity and the time of delivery. There were more 'abnormal' deliveries in the surgical treated group such as more bleedings, more cervical insufficiencies and a faster descent-time curve of the presenting part of the fetus. The premature frequency was 13.2% in the conized group and only 3.8% in the control group. The study gives support to a primarily more conservative policy in young women with positive smears.