[An ischemic pulmonary malformation of the surviving fetus occurring after selective embryo reduction in bichorionic pregnancy. Report of one case and literature review].

We describe, to our knowledge, the first case of a pulmonary malformation called acinar dysplasia occurring at a surviving fetus after selective embryo reduction in a bichorionic pregnancy. The chronological and histological observations suggest that this anomaly may be linked with a feticide achieved at 13 week's gestation. Literature review concerning selective embryo reduction shows rare cases of vascular connections in bichorionic pregnancies especially during the first half of gestation, that can explain in part the apparition of survivor's anomalies.