[Amniotic band syndrome associated with an acardiac malformation in a twin pregnancy. Apropos of a case].

We report herein a case of a twin pregnancy with one fetus showing an amniotic band syndrome, the other being an acardiac monster. This is, to our knowledge, the first case of this unusual combination. Both fetuses showed multiple severe malformations. According to the classification of Napolitani, one fetus had to be classified as "acardius anceps". The malformations of both bodies and the anomalies of both umbilical cords suggest a similar defect of the germinal disc, possibly occurring very early during the pregnancy.