乳児脳室内腫瘍—自験例3例の臨床像特に他のhydrocephalusとの鑑別を中心に

Infantile Intraventricular Tumor Appraisal of its Clinical Features and Differential Diagnosis of Hydrocephalus of Various Cause

I．はじめに

　小児の脳腫瘍は一部の例外（cerebellar astrocytoma）を除いてはなお予後は悲観的とされている。

　近時，小児脳神経外科学の発達によつて，わが国でも小児脳腫瘍の発見率は徐々に上昇しつつあるといえる。しかし新生児を含めた乳児すなわち生後1年未満の脳腫瘍はまれであり，その診断および治療については多くのむずかしい問題を含んでいる。

Among our brain tumor series in recent 5 years, 3 cases of early infantile (below the age of 1) in-traventricular space occupying lesion were clinically and pathologically discussed. The prompt and ap-propriate diagnosis of the early infantile brain tumor particularly occupying intraventricular space is thought to be difficult due to its abrupt occurrence of the intracranial hypertension. The analysis of the shift in the anterior and the posterior choroidal arteries on angiogram or the negative configuration of the tumor in the ventricle on pneumoventriculo-gram via the frontal fontanelle are of great use to obtain the clue to analyse these tumors.

Our case 1 is ependymoma occurred in the age of 2 months' postnatal period and estimated as con-genital (probably arose in utero) in origin. This is the 72 nd case ever reported in the literature. Case 3, chroid plexus papilloma, might also be estimated as congenital because of its early producing symp-toms on 70th clay postnatal period.

In case the rapid intracranial hypertension is ob-served due to C. S. F. overproduction with high protein content such as seen in case 3, the palliative ventriculo-atrial shunt is most advisable prior to the radical operation.