Wyatt's Potter's Syndrome

We had samples of Wyatt's cord blood tested to determine if there were any chromosomal abnormalities.  The tests came back perfectly normal.  Based on that and Wyatt's near perfect appearance, we were told that he did have Potter's Syndrome and given a 3% or so chance of recurrence.  We never dreamed that it was not a "fluke" or could happen again.  Especially not after having three healthy babies.