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pp.345-351
Published Date 1955/11/20
DOI https://doi.org/10.11477/mf.1406200472

Meningiomas represent often no special sym-ptoms until they grow extremely large and so-metimes pass with ununderstandable signs, which differ from those of gliomas due to the fact that the former grow slowly and push the surroun-ding structures aside and, on the other hand, the brain functions which fall out chronically and slowly have possibilites to be compensated by the functions of the other parts of the brain or the contralateral hemisphere. We must also take notice of the following fact that meningio-mas cause sometimes striking cerebral swelling and edema abruptly. The patient becomes seri-ous, when those tumors grow to a certain size, or if not so, depending upon the site of the tu-mor, in consequence of venous congestion due to the pressure of the tumor on some veins and sinuses or in consequence of disturbance of blood supply due to the pressure of the tumor on some arteries.

Two cases of meningiomas, treated in our cli-nic, are presented here, which reveal the great importance of above mentioned considerations.

1st Case: was a bilateral falx meningioma in occipital lobe.The right side there of, which was extirpated in the first stage operation, represe-nted a global tumor with a extremely heavy weight of 380 gm. without hyperostosis. This patient, having such a huge tumor, complained preoperatively no pressure syndrome such as headache, nausea, vomiting, choked disc etc.. Only incomplete hemianopia and evident calci-ficatioh on the roentgenogram showed the loca-tion of the tumor. Postoperative course was uneventful and he is now enjoying his school life.

2nd Case: was a parietal convexity meningio-ma of moderate size (150gm.) partly exposed on the cortical surface occupying the left anterior and posterior central convolutions and posteriorly the part of occipital lobe. In spite of the loca-tion he did not show motor and sensory distur-bance, aphasia, apraxia, agnosia etc.. On the one hand anisocoria, palsy of conjugate upwards movement, incomplete reaction of pupils to light, left retrolabyrinthine deafness and ataxia were observed. Consequently the lesions from the interbrain to the midbrain was preoperatively suspected. However the pneumoencephalogram showed the true location of the tumor and the operative removal was performed successfully.


Copyright © 1955, Igaku-Shoin Ltd. All rights reserved.

基本情報

電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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