Imaizumi Y
Institute of Population Problems, Ministry of Health and Welfare, Tokyo, Japan.
Teratology. 1989 Aug;40(2):101-3. doi: 10.1002/tera.1420400203.
During the period from 1969 to 1985, 107 pairs of twins, of which at least one in each pair had congenital hydrocephalus, were ascertained in Japan. The rate of concordance for hydrocephalus among these twins was 15%, with a slightly higher rate in like-sex male twins (28%) than in like-sex female twins (14%). The rates were 21% in like-sex and 0% in unlike-sex pairs. Two twin pairs had one anencephalic twin and one hydrocephalic twin.
在1969年至1985年期间，日本确定了107对双胞胎，每对中至少有一人患有先天性脑积水。这些双胞胎中脑积水的一致率为15%，同性男性双胞胎（28%）的一致率略高于同性女性双胞胎（14%）。同性双胞胎的一致率为21%，异性双胞胎的一致率为0%。有两对双胞胎，一对是无脑儿，另一对是脑积水患者。
