原発性大脳半球間裂部硬膜下膿瘍の1治験例

Primary Interhemispheric Subdural Abscess: Report of a case

I．はじめに

　原発性大脳半球間裂部硬膜下膿瘍は稀な病態で，われわれの調べ得た範囲では，自験例を含め24例が報告されているに過ぎない．今回著者らは，CTスキャン及びmagnetic resonance imaging（MRI）で術前に的確な診断をし得た原発性大脳半球間裂部硬膜下膿瘍の1例を経験したので，文献的考察を加えて報告する．

We reported a rare case of primary interhemispheric subdural abscess. Twenty-three cases of this patholo-gical condition have been reviewed. In those reports, however, findings of magnetic resonance imaging (MRI) were not referred to. In this report, MRI find-ings in this pathological condition, in addition to X-ray computed tomography (CT), is mentioned. A 22-year-old man, who had suffered from headache and vomit-ing for 2 weeks, suddenly became drowsy and left-hemiparetic. The X-ray CT scan on admission showed a well-circumscribed low density area in contact with the falx in the right parieto-occipital region.