vanishing twin


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vanishing twin

[van′ishing]
a twin embryo or fetus that is aborted during pregnancy.
The spontaneous regression of a 2nd gestational product, which occurs in 20% of twin gestations
Diagnosis Ultrasound in 1st trimester

vanishing twin

The spontaneous regression of a 2nd gestational product, which occurs in 20% of twin gestations Diagnosis Ultrasound in 1st trimester. Cf Twins.

vanishing twin

Fetal resorption in multiple gestation.
See: gestation, multiple
See also: twin
References in periodicals archive ?
Unidentified vanishing twin pregnancies can also lead to fetal sex prediction errors if the vanishing twin is male and the remaining twin is female.
Reproductive specialists from Europe and the US cover risk factors for miscarriage, ectopic pregnancy, ultrasound detection of congenital uterine anomalies, management of pregnancy loss, investigation of recurrent miscarriage, molar pregnancy, uterine nature killer cells and reproduction, cytogenic factors, parental chromosome testing, embryoscopy, thrombophilia, thrombosis and air travel, immunotherapy, endometrial receptivity, clinical assessment of the endometrium, implantation failure, embryo reduction in multiple pregnancies, miscarriage after in vitro fertilization, vanishing twin syndrome, and late pregnancy loss.
The second blood population in my system is the result of a vanishing twin.