Twin reversed arterial perfusion (TRAP) syndrome

S Sen1, U I Esen, S N Sturgiss

  • 1Department of Obstetrics and Gynaecology, South Tyneside District Hospital, South Shields, UK.

Twin reversed arterial perfusion (TRAP) syndrome is an extremely rare manifestation of feto-fetal transfusion syndrome. This condition is seen in monozygotic twin pregnancies, where the affected twin is perfused retrogradely by the healthy twin. The affected twin presents with bizarre malformations such as acardia and acephalus. We present such a case, which was diagnosed prenatally. The pregnancy progressed uneventfully to term.