偽脳腫瘍の6歳男児例

Pseudotumor cerebri in a six-year-old boy

　小児では稀な偽脳腫瘍例を経験した。症例は6歳男児で，発熱，頭痛にて発症した。両眼の乳頭浮腫および頭蓋内圧の亢進を認めたが，髄液の性状には異常なく放射線学的検査で異常を認めなかった。視力，視野，パターン視覚誘発電位は正常であった。脳圧亢進の原因は特定できず，高浸透圧剤の点滴および腰椎穿刺にて脳圧は下降し，乳頭浮腫も改善した。

A 6-year-old boy developed severe headache, high fever and pain in his left ear. He was treated for acuteotitis media. He then developed signs of meningitis with elevated intracranial pressure. He was referred to us 4 weeksafter initial onset. He had normal findings in visual acuity, visual field, and pattern visually evoked cortical potentials.Funduscopy showed papilledema in both eyes. Radiological examinations were negative regarding the cause of intracranialhypertension. Intravenous hyperosmotic agents and lumber puncuture induced improvements in intracranial hypertensionand papilledema.