Twin to Twin Transfusion Syndrome (TTTS) is a disease of the placenta (or afterbirth) that affects identical twin pregnancies.
-TTTS affects identical twins (or higher multiple gestations) who share a common monochorionic placenta.
-The shared placenta contains abnormal blood vessels which connect the umbilical cord and circulations of the twins.
-The common placenta may also be shared unequally by the twins
-The events in pregnancy that lead to TTTS are all random.
-TTTS is not hereditary or genetic, nor caused by anything the parents did or did not do.
-TTTS can happen to anyone.