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Related Experiment Videos

An acardiac acephalic monster.

J C van Groeninghen, A M Franssen, W N Willemsen

    European Journal of Obstetrics, Gynecology, and Reproductive Biology
    |May 1, 1985
    PubMed
    Summary
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    Acardiac acephalic monster, a rare congenital anomaly, occurs in monochorionic pregnancies. This parasitic twin relies on its co-twin for survival, making it incompatible with life outside the womb.

    Area of Science:

    • Perinatology
    • Teratology
    • Medical Genetics

    Background:

    • Acardiac acephalic monster is an extremely rare congenital anomaly, with an incidence less than 1 in 34,600 deliveries.
    • This condition exclusively occurs in multiple, monochorionic pregnancies, indicating a shared placental circulation.

    Observation:

    • The acardiac monster is a parasitic fetus, lacking a developed heart and head.
    • It is sustained by abnormal vascular connections (anastomoses) to the circulation of a co-twin.

    Findings:

    • The parasitic nature of the acardiac twin leads to its dependence on the co-twin for survival.
    • The anomaly is incompatible with extrauterine survival due to its malformations and circulatory dependence.

    Implications:

    Related Experiment Videos

    • Prenatal diagnosis of acardiac acephalic monster is crucial for managing pregnancy complications.
    • Understanding the etiology and pathophysiology aids in counseling and potential interventions for affected pregnancies.