The mirror syndrome is a rare obstetric condition whose classical triad is fetal hydrops, generalized maternal edema and placentomegaly. We present the case of a 25 weeks pregnant woman with diagnosis of fetal hydrops due to severe anemia presenting criteria of severe preeclampsia with fetal death, in the context of mirror syndrome. We review the literature with emphasis on anti-angiogenesis as the pathophysiological origin of the disease.

We present four cases of monochorionic twin pregnancies with diagnosis of type III selective intrauterine growth restriction, highlighting the ultrasonographic characteristics (evaluation of the umbilical artery intermittent reverse diastole and the superficial arterio-arterial anastomosis), its evolution during pregnancy and its follow-up during the first month of life.