#amyelia

• Amyelencephalus — A medical term from the field of teratology denoting a fetus or congenitally malformed organism structurally characterized by the total absence or severely impaired development of the spinal cord (amyelia) and the myelencephalon (embryonic medulla oblongata). This severe neurological anomaly is incompatible with life and is investigated within major neural tube defects.
• Amyelia — An extremely rare and severe congenital malformation within the neural tube defects spectrum, characterized by the total absence or complete developmental arrest of the spinal cord. This severe structural anomaly occurs during the first weeks of embryogenesis due to the failure of the posterior neuropore to close, being incompatible with extrauterine life and often associated with other major cranial malformations.