[Posterior cortical atrophy presenting with agraphia for kanji and statokinetic dissociation (Riddoch phenomenon): a case report].

Q4 Medicine
Kyoko Maruta, Kazutaka Shiomi
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引用次数: 0

Abstract

We report a patient with posterior cortical atrophy (PCA) who manifested as agraphia for kanji and statokinetic dissociation (Riddoch phenomenon). A 52-year-old, right-handed woman complained that beginning at age 50, she could write only kana (a phonographic script) but not kanji (a morphographic script). She could not write even her own name in kanji. Neuropsychologic examinations disclosed kanji-dominant agraphia, acalculia, right-left disorientation, finger agnosia, constructional apraxia, and simultanagnosia. Many of these, including agraphia, are components of Gerstmann syndrome. She manifested no aphasia or alexia, while not only writing but also copying of kanji was impaired. Speech functions, behavior, and personality were relatively spared. The patient also displayed statokinetic dissociation (Riddoch phenomenon): kinetic Goldmann fields were normal, but static Humphrey visual fields showed an incongruous right homonymous hemianopsia. MRI showed atrophy of the left parietal lobe. 99mTc ethyl cysteinate dimer (ECD) single-photon emission computed tomography (SPECT) showed hypoperfusion , predominantly in the left hemisphere and especially left the parietal lobe . These clinical and neuroradiologic findings are consistent with PCA. In patients with PCA, suspected incomplete homonymous hemianopsia should be confirmed with a Humphrey visual field test. Ishihara pseudoisochromatic plates may not be reliable; color vision should be checked using the panel D-15 test.

后皮质萎缩表现为汉字失写症和静止动力学解离(Riddoch现象):1例报告。
我们报告一位后皮质萎缩(PCA)患者,表现为汉字失写症和静态动力学解离(Riddoch现象)。一位52岁的右撇子女性抱怨说,从50岁开始,她只会写假名(一种留声机文字),而不会写汉字(一种形态文字)。她甚至不会用汉字写自己的名字。神经心理检查显示汉字显性失认症、失算症、左右定向障碍、手指失认症、结构性失用症和同时失认症。其中许多,包括失写症,都是格斯特曼综合症的组成部分。她没有出现失语症或失语症,但不仅书写,而且复制汉字也受到损害。语言功能、行为和个性相对完好。患者还表现为静态动力学解离(Riddoch现象):动态Goldmann视野正常,但静态Humphrey视野表现为不协调的右侧同义偏盲。MRI显示左顶叶萎缩。99mTc乙基半胱氨酸二聚体(ECD)单光子发射计算机断层扫描(SPECT)显示低灌注,主要发生在左半球,尤其是左顶叶。这些临床和神经放射学表现与PCA一致。在PCA患者中,怀疑不完全同名性偏盲应通过Humphrey视野试验确认。石原伪等色版可能不可靠;色觉应使用面板D-15测试进行检查。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Clinical Neurology
Clinical Neurology Medicine-Neurology (clinical)
CiteScore
0.30
自引率
0.00%
发文量
147
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