结果引起婴幼儿脑外积液的主要原发病有感染性疾病、硬膜下或蛛网膜下出血、缺氧缺血性脑病（H IE）占67.4%（31/46例），原因不明占26.1%（12/46例）。

Results EH mainly resulted from infection, subdural hematoma or subarachnoid hemorrhage, HIE, which were 67.4%(31/46 cases) of the cases; EH with unknown cause were 26.1%(12/46 cases).

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