A Rare Cause of a Large Posterior Fossa Mass: Giant Varix

YP Goh, KK Lau

Hong Kong J Radiol 2011;14:39-43

Herein, we report a very rare case of a patient suffering from the simultaneous occurrence of an unusually gigantic posterior fossa varix (measuring 35 mm x 45 mm) and a tentorial dural arteriovenous fistula in the absence of intracranial haemorrhage. Simultaneous occurrence of a varix and a tentorial dural arteriovenous fistula is present in only 4% of all intracranial dural arteriovenous fistulae. These concurrent conditions are associated with a high risk of intracranial haemorrhage and intracranial hypertension that can give rise to focal neurological deficits. Its clinical relevance and radiological findings are discussed in this report.





本文報告一宗非常罕見的病例,患者有一個異常大的後顱窩巨型靜脈曲張(35 x 45毫米大小),同時有小腦幕硬腦膜動靜脈瘺(患者並無顱內出血)。硬腦膜動靜脈瘺患者中有4%會同時出現靜脈曲張及小腦幕硬腦膜動靜脈瘺。此異常情況與高風險顱內出血和顱內高壓有關,會導致神經系統局部功能受損。這宗病例是有關一個有異常大後顱窩靜脈曲張的病人,此患者並無顱內出血,但同時患有小腦幕腦腦膜動靜脈瘺。本文報告其放射性結果及有關的臨床意義。