Venous angioma associated to cavernous malformation of the posterior fossa

Background. - Association of venous angioma to cavernous malformation is rare. If bleeding occurs, it must be assigned to the cavernous malformation. Case report. - A 4 year-old boy suffered from an acute ataxia. 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 infarction. Conclusion. - Venous angiomas are rarefy symptomatic and are considered as normal venous variants. Indeed, the cavernomas are true malformations with a high bleeding potential. When both lesions are associated and bleeding occurs, only the cavernous malformation has to be removed if surgically accessible.