Which of the following is NOT a neural tube defect?

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Multiple Choice

Which of the following is NOT a neural tube defect?

Neural tube defects arise from failure of the neural tube to close during early development, leading to conditions that directly affect the brain and spinal cord. Encephalocele involves a skull defect with brain tissue herniating through it, spina bifida reflects incomplete closure of the neural tube in the spine, and anencephaly is the failure of the cranial neural tube to develop, resulting in missing portions of the brain and skull. Hydrocephalus, however, is an abnormal buildup of cerebrospinal fluid within the brain’s ventricles. It is a problem of CSF dynamics, not a defect of neural tube formation itself, though it can occur alongside neural tube defects. Therefore, hydrocephalus is not a neural tube defect.

Neural tube defects arise from failure of the neural tube to close during early development, leading to conditions that directly affect the brain and spinal cord. Encephalocele involves a skull defect with brain tissue herniating through it, spina bifida reflects incomplete closure of the neural tube in the spine, and anencephaly is the failure of the cranial neural tube to develop, resulting in missing portions of the brain and skull. Hydrocephalus, however, is an abnormal buildup of cerebrospinal fluid within the brain’s ventricles. It is a problem of CSF dynamics, not a defect of neural tube formation itself, though it can occur alongside neural tube defects. Therefore, hydrocephalus is not a neural tube defect.

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