Hayashida O, Yamashita T, Nagamitsu T, Yasuda H, Kamei T
Department of Neurosurgery, Yamaguchi Prefectural Central Hospital, Japan.
No Shinkei Geka. 1999 Mar;27(3):233-6.
With regard to the natural history of venous angioma, the risk of hemorrhage is reported to be relatively higher if the lesion exists in the posterior fossa. However a recent report of 100 cases of venous angioma concluded that the risk of hemorrhage was low, being only 0.22%/year. Although the true rate of hemorrhage is uncertain, we have encountered case of cerebellar hematoma due to venous angioma in the posterior fossa where the patient presented with trigeminal dysfunction and cerebellar ataxia, without any history of hypertension. We considered that venous angioma in the posterior fossa might cause cerebellar hemorrhage. After removal of the hematoma, the patient's symptoms were resolved. In the posterior fossa, a relatively higher volume of venous blood would cause venous congestion to occur more easily, leading to damage of the fragile wall of the angioma.
关于静脉血管瘤的自然病史，据报道，如果病变存在于后颅窝，出血风险相对较高。然而，最近一份关于100例静脉血管瘤的报告得出结论，出血风险较低，仅为每年0.22%。尽管出血的真实发生率尚不确定，但我们遇到过因后颅窝静脉血管瘤导致小脑血肿的病例，该患者出现三叉神经功能障碍和小脑共济失调，无任何高血压病史。我们认为后颅窝的静脉血管瘤可能导致小脑出血。血肿清除后，患者症状得到缓解。在后颅窝，相对较多的静脉血量会更容易导致静脉淤血，从而导致血管瘤脆弱壁的损伤。
