The small branches seen anteriorly to optic chiasma in the chiasmatic cistern were almost always the branches of superior hypophyseal artery.
在视交叉池内，垂体柄前方所见的小动脉几乎均属于垂体上动脉的分支。
Conclusion The compression of optic nerves and optic chiasma is responsible for different types of visual field defects caused by saddle area tumors.
结论颅底肿物引起不同类型的视野缺损的原因与压迫视神经、视交叉相关。
Objective To provide morphological evidences for visual field defects caused by the compression of optic nerves and optic chiasma by saddle area tumors.
目的为脑底肿瘤压迫视神经、视交叉引起视野缺损原因提供形态学依据。
Results Orbit tumor of a 21 year old young lady extends the encephalic and endangers the olfactory nerve and optic chiasma, even cause olfaction and visual acuity to be declined.
结果1例2 1岁女性患者，眼眶肿瘤侵入颅内损伤嗅神经及视交叉，引起嗅觉及视力下降。
Results Orbit tumor of a 21 year old young lady extends the encephalic and endangers the olfactory nerve and optic chiasma, even cause olfaction and visual acuity to be declined.
结果1例2 1岁女性患者，眼眶肿瘤侵入颅内损伤嗅神经及视交叉，引起嗅觉及视力下降。
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