1歳8カ月の左シルビウス裂内髄膜腫

Left Sylvian Fissure Meningioma in a One-Year-Eight-Month Old Child

I．はじめに

　今回，われわれはシルビウス裂内髄膜腫の1歳8カ月男児例を経験した．CTやMRIで明らかな硬膜の増強効果を認めず，術中にも硬膜との付着部位は認めなかった．小児の髄膜腫は稀であり，その発生部位がシルビウス裂内のもの^2,3,4,21）は本症例が5例目である．そこで，文献的考察を交えてこれを報告する．

We report a case of a Sylvian fissure meningioma in a one-year-eight-month old child who experienced the onset of a convulsive seizure. He had no neurological deficit and no developmental disorders. Com-puted tomography (CT) and magnetic resonance imaging (MRI) showed a large left temporal tumor which was well enhanced and without dural attachment. Angiography revealed a slight tumor stain in the left Sylvian fissure supplied by branches of the internal carotid artery. Total removal of the tumor was per-formed, and we found that the tumor had no dural attachment, but was strongly attached to the M2 seg-ment of the left middle cereberal artery. Pathological examinations revealed it to be a fibrous meningioma without malignancy. This is the youngest case among the reported five pediatric deep Sylvian menin-giomas. Introducing this case, we discuss the clinical features of pediatric meningiomas.