The results showed that aqueduct stenosis was located in distal segment in most cases and proximal segment or all segment in a few cases.
结果发现狭窄多发生于导水管远段，少数位于近段或全程狭窄。
The adhesions is the most common cause of aqueduct stenosis and MR is the best for diagnosis of aqueduct stenosis, especially on midsagital section.
粘连是导水管狭窄最常见的原因，少数系由导水管先天畸形或胶样变所致。
ETV is an effective method of treating obstructive hydrocephalus caused by aqueduct stenosis and occupying lesions in posterior cranial fossa and midbrain.
对于多种原因引起的梗阻性脑积水患者ETV有很好的效果。
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