Tubal pregnancy after clomiphene treatment: are you sure is not bilateral?

The estimated prevalence of ectopic pregnancy (EP) is 1-2% worldwide. Bilateral tubal pregnancies represent the rarest form of heterotopic pregnancy, and spontaneously conceived are extremely unusual, as many cases are derived from assisted reproductive techniques. We describe a case of bilateral tubal pregnancy after clomiphene therapy and sexual intercourse in which the second EP was not contemporarily revealed.