MRI Diagnosis and Clinical Study of Brain-stem Cavernous Angioma / 实用放射学杂志

ABSTRACT

Objective To study MR imaging diagnostic value of brain-stem cavernous angioma(BCA).Methods 9 cases of BCA proved both surgically and pathologically with integrated clinical,MRI and pathological data were analyzed.Results The clinical attacks were divided into two typesthe sudden and the resting.The MRI findings of BCA includedisointensity or hypointensity on T1WI(76.5%),isointensity or hyperintensity on T2WI(85.3%),heterogeneous mixed signal intensity on both T1WI and T2WI (36.2%),hypointense ring round angioma on T2WI (16.2%).On Gd-DTPA scanning,the lesions were slight enhancement or no enhancement in 8 cases.The shapes of lesions were round-like in most cases(86.6%),and typical moruloid or network in some cases(11.7%).The lesions localized in the midbrain in 3 cases,in the pons in 4,and in the medulla oblongata in 2.The histopathological findings includedcomposite pathological changes in most cades,elastic fibers in the angiomatous lacuna vasorum in 3 cases,visible drainage vein and supply artery in 2 cases.MRA showed hyperintensity around the angiomas in 5 cases.Conclusion MR imaging is of significant value in diagnosing BCA.