He's got an enlarged aortic root.
That is eventually fatal for everyone, with athletes having increased cahnces of aortic rupture due to high heart strain.
Turiaf is probably lucky in his misfortune, because if he was not a basketball player, and not so thoroughly examined by Lakers doctors, the problem would still be unknown, he would have no correcting surgery and he would most likely die sometime in th efuture, without even knowing why.
So his luck/misfortune is really a matter of perspective.