Many babies with anencephaly live throughout the
pregnancy to birth. Still, some die prematurely while
others die during the delivery. This is called
stillbirth. Those who survive may live a few seconds,
minutes, hours, or even days. While some babies will live months or even years with Anencephaly, it is not common. Sadly, the condition is not correctable or reversible. Anencephaly is always
fatal.
(Source: http://www.anencephaly.info/pdf/anen-info_2006-USA.pdf )