[On the biological behaviour of the rare malignant plexus papilloma in childhood: long-term observations in two operated cases].

Only a few verified cases of malignant papilloma of the choroid plexus have been described in the literature. The biological nature and prognosis of those tumours are not well known. Two cases of our own material are presented in whom large tumours of the lateral ventricles have been removed. One patient was 9 months and the other seven years old at the time of operation. The clinical follow-up period was seven years. Computer-tomography controls did not reveal any sign of recurrence. The published cases are reviewed until 1981. Their clinical aspects, the histological features and the nature of these rare tumours are discussed.