What is Twin to Twin Transfusion Syndrome (TTTS)?
Also sometimes known as 'FFTS' (Feto-Fetal Transfusion Syndrome), and as 'TOPS' (Twin Oligohydramnios-Polyhydramnios Sequence), TTTS is a disease of identical twin fetuses caused by abnormal connecting blood vessels in the twins' placenta, resulting in an imbalanced flow of blood from one twin to another.
The implications of this can be very serious for the survival and health of both twins. Once thought to be extremely rare, TT....






