Twins can be absorbed in approximately 21-30% of multifetal pregnancies. This phenomenon is medically known as Vanishing Twin Syndrome.
Understanding Vanishing Twin Syndrome
Vanishing Twin Syndrome occurs when one fetus in a multifetal pregnancy disappears in the uterus during pregnancy. This usually happens in the first trimester, with the fetal tissue being reabsorbed by the other twin, the mother, or the placenta.
Historically, this condition was less frequently diagnosed. However, with the widespread use of ultrasonography in early pregnancy, healthcare providers can now detect multifetal pregnancies much earlier. This increased diagnostic capability has led to a significant rise in the recognition of vanishing twin syndrome.
Frequency and Detection
The precise frequency of twin absorption varies, but current estimates indicate a notable percentage within multifetal gestations.
| Condition | Occurrence Rate | Key Factor in Diagnosis |
|---|---|---|
| Vanishing Twin Syndrome | 21-30% of multifetal pregnancies | Increased use of early ultrasound |
It's important to note that while the absorption of one twin can be a concerning discovery for expectant parents, it often occurs without significant complications for the surviving twin or the mother. The diagnosis typically highlights the adaptability of the human body and the advancements in prenatal diagnostic tools.
For more detailed information on multifetal pregnancies and related conditions, you can consult reliable resources such as the American Pregnancy Association.
