Medical Dictionary

acardius

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noun acar·dius \(ˈ)ā-ˈkärd-ē-əs\

Medical Definition of acardius

  1. :  one of a pair of twin fetuses that develops without a heart and receives its blood supply from its twin through vascular connections on the placenta <… due to the parasitic relationship of the acardius, there is a high risk of mortality (50-75%) in the donor twin …—Ona Marie Faye-Peterson et al., Handbook of Placental Pathology, 2006>


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