脊髓囊状膨出

定义

胎儿发育过程中由于神经管未能完全闭合引起的情况。特征是皮肤覆盖的腰骶部肿块，蛛网膜内衬脑膜膨出与脊髓蛛网膜下腔直接相通，以及横穿脑膜膨出并扩张为巨大终末囊肿的低位脊髓积水。这种情况可表现为脊髓囊性膨出部位以下的神经损伤和随后的功能损害。

A condition caused by failure of the neural tube to close completely during fetal development. The condition is characterised by skin covered lumbosacral masses, an arachnoid lined meningocele that is directly continuous with the spinal subarachnoid space, and a low lying hydromyelic spinal cord that traverses the meningocele and expands into a large terminal cyst. This condition can present with neural damage and consequent impairment of function below the site of the myelocystocele.

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• 脊髓囊状膨出