Rogers S C
Br J Prev Soc Med. 1976 Mar;30(1):26-8. doi: 10.1136/jech.30.1.26.
The twin pairs with spina bifida and or anencephalus collected from the literature by Rogers and Weatherall (1976) form the basis for an argument that the apparent rarity of dizygous twins concordant for these malformations may be due to the breakdown of the interamniotic partition and a subsequent fetus-fetus interaction. It is suggested that this may lead to complete or partial destruction of one twin. When cells survive they may form teratoma or patches of anomalous skin cover. The hypothesis that monozygous twins concordant for these defects may form double monsters is re-stated. The present hypothesis predicts that the incidence of pineal and intraspinal teratoma will vary in time and place with anencephalus and spina bifida, and that the scalp type hairs found over or around spina bifida may prove, in male infants, to have female chromosomes.
罗杰斯和韦瑟罗尔（1976年）从文献中收集的患有脊柱裂和/或无脑畸形的双胞胎对，构成了一个论点的基础，即这些畸形的异卵双胞胎明显罕见，可能是由于羊膜间隔破裂以及随后的胎儿-胎儿相互作用。有人认为，这可能导致一个胎儿完全或部分被破坏。当细胞存活时，它们可能形成畸胎瘤或异常皮肤覆盖斑块。再次阐述了同卵双胞胎患这些缺陷可能形成双头怪物的假说。目前的假说预测，松果体和脊柱内畸胎瘤的发病率将随无脑畸形和脊柱裂的时间和地点而变化，并且在脊柱裂上方或周围发现的头皮型毛发，在男婴中可能证明具有女性染色体。
