Case Study on Various Neural Tube Defects

Primary neural tube defect: Primary failure of closure of neural tube or disruption of already closed neural tube between 18 and 25 days of gestion - mylomeningocele, encephalocele, anencephaly. Secondary neural tube defect: Abnormal development of lower sacrel or coccygeal segments during secondary neuralation - meningocele, lipomeningocele, sacrel agenesis / dydgenesis, diastomatomyelia, tethered cord.