Lethal Neural Tube Defects: Reports of Anencephaly and Craniorachischisis Cases and Literature Review.

Neural tube defects are serious birth defects of the central nervous system that result from a multifaceted disruption of normal embryogenesis of the nervous system. Although largely preventable, they nonetheless pose a serious threat to global morbidity, disability, mortality, and financial expenses. Despite this, it has been neglected and has only been the subject of limited research until recently. Furthermore, surveillance efforts for neural tube defects remain limited, and no decline in defects has been documented in less developed countries. Here, we report two cases of craniorachischisis and one case of discordant twins for anencephaly. Moreover, the relevant works of literature that are necessary to understand and address this unrelenting phenomenon are provided.