What is a Vanishing Twin? Understanding the Hidden Twin Phenomenon

Discover what a hidden twin, or vanishing twin, is and learn about this fascinating pregnancy phenomenon.

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A hidden twin is referred to as a 'vanishing twin.' This phenomenon occurs when one twin in a multiple pregnancy is reabsorbed into the mother's body or the surviving twin. It often happens in the first trimester of pregnancy.

FAQs & Answers

  1. What causes a vanishing twin? A vanishing twin is typically caused by the reabsorption of one twin early in the pregnancy, often due to factors affecting the embryo's viability.
  2. Is a vanishing twin harmful to the surviving twin? In most cases, a vanishing twin does not harm the surviving twin, but it can lead to complications, and monitoring is recommended.
  3. How common are vanishing twins? Vanishing twins are relatively common; studies suggest that up to 30% of twin pregnancies may involve a vanishing twin.
  4. Can you see a vanishing twin on an ultrasound? Yes, a vanishing twin may be detected on an early ultrasound, but it may not be visible later if reabsorption occurs before the heartbeat is detectable.

Watch More

To learn more about pregnancy health and twin phenomena, check out our articles on multiple pregnancy risks and the development of twins during gestation.

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