一百多年来，临床实践已经证实脑垂体肿瘤（或视交叉部病变）可以引起双颞侧偏盲的视野改变。
It has long been known that bitemporal hemianopsia is one of the typical manifestations in patients with pituitary tumours.
结论HSN是与右半球病变相关的认知功能障碍，同向性偏盲是一种视野缺损。
Conclusion HSN is a right cerebral hemisphere disease relating to cognitive impairment while homonymous hemianopia is the defect of visual field.
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