臨床婦人科産科73巻6号

2019年06月発行

今月の臨床 多胎管理のここがポイント―TTTSとその周辺

膜性に応じた対応

膜性による先天異常の発症率の違い

著者： 住江正大¹

所属機関： ¹福岡市立こども病院産科

ページ範囲：P.580 - P.584

文献概要

●二卵性双胎における先天異常の発生頻度は単胎とほぼ同等とされているが，一卵性双胎では単胎の2〜3倍多く発生すると考えられている．

●二絨毛膜性双胎と比較すると一絨毛膜性双胎では先天異常の頻度が約2倍に増加する．

●同一の受精卵から発生する一卵性双胎であっても，同一の先天異常を有する確率は高くない．

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