How are ectopic pregnancies supposed to be dealt with according to the Catholic Church?

The Catholic Church is against abortion in all cases, except, I've heard, where the life of the mother is at serious risk and the child has no chance of survival. A good example of this would seem to be the case of an ectopic pregnancy, where the human embryo implants in the mothers fallopian tube. But some actual forms of abortion would seem to violate respect for the human person, forming in the wrong place by no fault of his or her own. So, in the end what means are licit for dealing with ectopic pregnancies?