EXTRA_UTERINE PREGNANCY SONOGRAM. EXTRA_UTERINE PREGNANCY SONOGRAM Gynecological and obstetric ultrasound. Extra_uterine pregnancy. It is an abnormal pregnancy that does not develop in the uterus but, very often, in a fallopian tube. The egg implants mistakenly in a fallopian tube because its progression towards the uterus is stopped by a tubal anomaly. Those tubal anomalies can have various causes. An infection can have damaged the cilia of the fallopian tube´s wall, then the egg has difficulti