Arteriography was indicated when abnormal flow persisted for more than 5 days or liver dysfunction appeared.

Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21.

TTTS occurs when abnormal blood vessels in the placenta transfuse too much blood into one baby and not enough to the other.

When abnormal classifications were compared, all measurement parameters, without exception, were significantly different in both the SAP and the Matrix subgroups.