Laser "miniconisation' and the outcome of subsequent pregnancy.

We routinely use the carbon dioxide laser miniconisation procedure for cervical interepithelial neoplasia I-III. A retrospective case control study was conducted in 1,485 miniconised women during 250 subsequent pregnancies (including three twin pregnancies). The analysis showed that the miniconised subjects had no significant pregnancy complications and the same preterm birth ratio (8.0%) as controls matched for age and parity.