Background. - Association of venous angioma to cavernous malformation
is rare. If bleeding occurs, it must be assigned to the cavernous malf
ormation. Case report. - A 4 year-old boy suffered from an acute ataxi
a. Investigation showed a venous angioma and a cavernoma malformation
in the posterior fossa. The patient was admitted again at the age of 8
years for a new episode of acute ataxia due to cerebellar hematoma. A
conservative treatment was settled because of the risk of venous infa
rction. Conclusion. - Venous angiomas are rarefy symptomatic and are c
onsidered as normal venous variants. Indeed, the cavernomas are true m
alformations with a high bleeding potential. When both lesions are ass
ociated and bleeding occurs, only the cavernous malformation has to be
removed if surgically accessible.