MARKED TWIN-TWIN TRANSFUSION IN THE ABSENCE OF NONIMMUNE HYDROPS

The precise pathophysiology of development of nonimmune hydrops in eit her the recipient or donor twin associated with twin-twin transfusion syndrome is not entirely clear. At times the recipient twin may develo p nonimmune hydrops, but at other times the donor twin, and infrequent ly both, may develop this ominous complication. We present an unusual case of this syndrome in which discordant twins, despite neonatal hema tocrit levels of 86 and 21% were both nonhydropic and discuss the poss ible underlying pathophysiology of this occurrence.