Spina bifida cystica and severe congenital bilateral talipes equinovarus in one twin of a monoamniotic pair: a case report.

Spina bifida cystica with severe bilateral CTEV in one twin of a monoamniotic pair illustrates the complexity in the interplay of causal factors of these malformations even among monozygotic twins who are assumed to share similar genetic and environmental features. The occurrence and poor outcome of the malformations was probably potentiated by poor antenatal care. With postnatal diagnoses, a better outcome was difficult to secure even with prompt referral. Early prenatal diagnoses and appropriate counseling of parents are cardinal.