著者

上出 文博 滝元 徹 古川 仭 作本 真 竹下 元 梅田 良三

出版者

耳鼻咽喉科展望会

雑誌

耳鼻咽喉科展望 (ISSN:03869687)

巻号頁・発行日

vol.31, no.1, pp.25-30, 1988-02-15 (Released:2011-08-10)

参考文献数

12

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The patient was a 42-year-old female whose chief complaints were headache and unilateral hyposmia for 2 months. There was no unusual finding in her nasal cavities. Roentogenography of the olfactory clefts and paranasal sinuses revealed no abnormality. Standard olfaction test using T & T olfactometer revealed right side severe hyposmia. Olfactory discrimination test carried out at the right nasal cavity showed hyposmia due to intracranial disorders. Intravenous olfaction test (Alinamin 10 mg) with bilateral nasal cavities indicated normal duration time, but the same test with right nasal cavity indicated redution of the duration time due to intracranial disorders. As we could set the electrode and the odorous stimulation while observing the olfactory portion with Olympus selfoscope SES 1711D, we recorded the typical slow negative potential similar to those in normal olfaction cases.RI angiography, computed tomography and right carotid angiography done at neurosurgery were useful in this case and showed a typical frontal fossa tumor.Total removal of tumor was performed by neurosurgeons under general anesthesia. Histological examination revealed a typical meningioma with psammoma body and micronecrosis.Unilateral olfactory disorder is one of the important symptoms not only in nasal and paranasal sinuses diseases but also in intracranial diseases however unilateral olfaction test is not yet a routine test even for ear-nose-throat specialists at present.