Ectopic pregnancy following treatment with human gonadotropins.

After treatment with human gonadotropins, 289 anovulatory women with apparently normal fallopian tubes became pregnant 379 times. Ten ectopic pregnancies in nine women were diagnosed, for an incidence of 2.7% of all conceptions. All the ectopic pregnancies were found in the fallopian tubes. Four patients had also an intrauterine pregnancy. Five of the patients showed ovarian overstimulation, and hormonal modifications at the time of ovulation might explain the high incidence of tubal gestation.