VERTIGO IN CHILDREN AND BRAIN TUMOR

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  • NOMURA KIMIHISA
    Department of Otorhinolaryngology, School of Medicine, Tokai University

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  • 小児のめまいと脳しゅよう
  • ショウニ ノ メマイ ト ノウ シュヨウ

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Abstract

In the past eight years and eight months 1, 502 cases were examined by electronystagmography (ENG). Among them 36 cases (2.4%) were vertiginous or dizzy children between six to fourteen of age. Twenty-three cases were boys and 13 cases were girls. Vertigo was chief complaint in 16 cases and dizziness or dysequilibration was complained in 20 cases.<br>Eleven cases were peripheral vestibular dysfunction and 18 cases were central vestibular disorder. Most important disease is infratentorial brain tumor: two medulloblastoma, two ependymoma, one astrocytoma, one pontine glioma. These tumors show many symptoms even under fundamental vestibular function tests such as detection of gaze nystagmus and righting reflex test.<br>In ENG examination moderately or remarkably abnormal eye tracking test, decreased optokinetic fusion limit(<60°/sec.)in optokinetic nystagmus and dysrhythmia in damped pendular rotation test indicate disorders of central vestibular system.<br>It is necessary for otolaryngologist never to miss brain tumor of posterior fossa complaing to dysequilibration or vertigo. These tumors are suspected by routine vestibular tests.

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