Conjoined Twin in Triplet Pregnancy Occurring after ICSI, Cryopreservation, and Assisted Hatching

Abstract

Conjoined twins result from an abnormal process in the development of monozygotic twins. Monozygotic twins are closely associated with assisted reproductive technology, especially assisted hatching. The prognosis for conjoined twins is very poor. This risk underscores the importance of fetal screening by ultrasonography in the early stages of pregnancy, since the conjoined twin can be detected by ultrasonography. Here we reported a case of conjoined twin in a triplet pregnancy after a transfer of cryopreserved embryos with assisted hatching that were obtained by ICSI.