2025, Number 4
Grenet syndrome is caused by slow flow venous malformation (cavernoma) in the pons
Domínguez CLG, Arellano AJG, Hasslacher AJF
Language: Spanish
References: 0
Page: 404-405
PDF size: 215.30 Kb.
Cerebral cavernous venous malformations (CVMs) are "slow-flow venous malformations". It is the third most common cerebral vascular malformation, supratentorial in ~80% of cases. Brainstem CVMs are rare (8-22%) of all intracranial cavernomas; 40% are incidental findings. If they occur, their symptoms are between 30 and 60 years of age; they are usually single lesions. The majority remain asymptomatic. Presentation due to bleeding can cause headaches, seizures, and focal neurological deficits. The risk of bleeding is < 0.1 to 1% per patient-year and 5% in the brainstem. Symptomatic lesions should, when possible, be resected, and complete resection is curative.