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.

中文摘要

巨型靜脈曲張：後顱窩大腫塊的一個罕見病因

吳菀彬、劉國斌

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。