脳血管性障害と誤診された原発性脳腫瘍の5例

FIVE CASES OF PRIMARY BRAIN TUMOR ERRONEOUSLY DIAGNOSED AS CEREBROVASCULAR DISEASE

　脳腫瘍の診断は，時に極めて困難な場合があり，その他の病気と混同せられる場合が少くない。脳腫瘍とまぎらわしい諸疾患のなかで，脳血管性障害は極めて屡々認められる神経疾患の一つであり，特に中年以上のものに於てその頻度が高く脳血管性障害の診断のもとに，脳腫瘍を見逃す場合が稀でない。最近，我々は沖中内科においてかかる症例を5例経験したので，その誤診の原因を追求して，自らの誤りを反省し今後に備えたい。

Conclusion

Five cases of primary brain tumor which had been erroneously diagnosed as cerebro-vascular disease were described and retro-scopic considerations upon the diagnostic er-rors were made. All of the cases in the pre-sent report were above middle age from 37 to 72 years: Some patients had episodes of cerebrovascular stroke, some showed clinical improvement in the course of the illness, and some presented a symptomatology of diffuse involvement of the brain. Although there was no definite clinical evidence of intracra-nial space-occupying lesions, a serious con-sideration should have been given upon the possibility of presence of the brain tumor. Merely thinking of such possibility would have stimulated us to perform the more de-tailed observations, leading successfully to a correct diagnosis. It should be stressed that the laboratory examinations, especially cerebral angiography and electroencephalo-graphy, may be of utmost value in the dif-ferential diagnosis of doubtful cases.