Transabdominal chorionic villus sampling in a patient with a bicornuate uterus.

In our preliminary experience with transabdominal chorionic villus sampling, we encountered a patient with a uterus bicornis bicollis and anterior fundal placenta, which posed particular technical difficulties for the transcervical approach, but in whom sampling was easily accomplished by the transabdominal route. A description of this case, as well as a discussion of our technique and experience to date, is provided.