静脈洞に沿って内頸静脈にまで進展したparasagittal meningiomaの1例

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A case of parasagittal meningioma which extended through the sinus into the internal jugular vein and presented as a neck mass was reported. The patient was a 37-year-old woman, admitted with a right-sided neck mass. CT scan with constant enhancement revealed a high-density mass at the right parietooccipital and parasagittal areas including the superior sagittal sinus, confluens, and lateral sinus. Right parietooccipital craniotomy was performed and the tumor of the parietooccipital and parasagittal area was removed. The posterior third of the superior sagittal sinus and right lateral sinus, which were filled with tumor, were also removed. Six months later, a second operation consisting of right occipital craniotomy with suboccipital craniectomy was performed and the tumor of the tentorium was removed. The sigmoid sinus, jugular bulb, and internal jugular vein which were filled with tumor were also removed. Both intracranial and extracranial tumors were histologically diagnosed as transitional type meningioma without obvious histological malignancy. The mechanism of tumor extension of this patient was extremely specific. Venous transmission of tumor cells must have played an important role. Five cases of meningioma presenting as a neck mass along the nerves or lymph nodes have been reported in the literature. However, a growth of meningioma in the internal jugular vein as a neck mass has not hitherto been reported.
日本脳神経外科学会の論文
1983-03-15

静脈洞に沿って内頸静脈にまで進展したparasagittal meningiomaの1例

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