頸動脈の硬膜枝から主に造影されたGlioblastomaの1症例

Glioblastoma Fed by Meningeal Branches of the External Carotid Artery : a case report

I．はじめに

　髄内腫瘍であるglioblastomaが硬膜に浸潤することが知られている^9-11）が，硬膜動脈から造影される症例は非常に稀^2-6,8-10）である．今回，われわれは脳血管撮影で外頸動脈の中硬膜動脈と副硬膜動脈から主に造影され，あたかも髄膜腫を思わせる所見を呈したglioblastomaの症例を経験したので文献的考察を加え報告する．

A rare case of glioblastoma fed by meningeal branches of the external carotid artery was reported. A 63-year-old female was transferred to our hospital suffering from gait disturbance and dysarthria. CT andMRI revealed brain tumor and paratumoral hemorrhage with a large cyst that was heterogenously en-hanced and existed in the right fronto-temporal region. Right external carotid arteriography demonstratedthe tumor stain markedly fed by the right middle meningeal artery and the accessory meningeal artery.Subtotal removal operation was carried out uneventfully using the right fronto-temporal craniotomy. Thehistological diagnosis was glioblastoma. After the operation the patient was in good condition, and wastransferred to another hospital for the purpose of the synchronized chemoradiotherapy.

It is well known that any glioma invades the meninges. However, we rarely encountered an intra-axialglioma fed by a meningeal blood supply. A meningeal-invaded glioma may make difficult its differentiationfrom meningioma. We concluded that there is necessity for close examination of the intra-axial braintumors invaded and fed by meningeal blood supply.