摘要
【目的】总结颅底副神经节瘤的MRI表现特征。【方法】16例颅底区副神经节瘤术前进行了MRI检查,并最终经病理证实。其中男性5例,女性11例,年龄在19￣71岁之间。1例为功能性,分泌儿茶酚氨激素,产生高血压。【结果】16例颅底区副神经节瘤中,2例为中耳鼓室瘤,8例为颈静脉球瘤,6例同时侵犯颈静脉球区和鼓室,即颈静脉鼓室球瘤。颅底区副神经瘤的主要征象包括:肿瘤实质T2WI呈均匀高信号,T1WI增强扫描明显强化及肿瘤内点条状迂曲流空血管,这些异常瘤内血管在T1WI增强扫描和T2WI显示清楚,即为“盐和楜椒”征，该征在本组病例出现率为81.3%。【结论】MRI均清楚地显示了颅底副神经节瘤的形态、大小、边界、侵犯范围及与邻近结构的关系,是诊断该类肿瘤的良好手段。
[Objective] To summarize the MRI characteristics of paragangliomas of skull base. [Methods] Sixteen cases of paragangliomas of skull base （11 females and 5 males, aged from 19 to 71 years ） were examined with MRI and confirmed by pathologic findings. One of them was functioning, which secreted catecholamine, resulted in hypertension. [Results] Among 16 cases of paragangliomas of skull base, there were two glomus tympanicum tumors, eight glomus jugulare tumors and six glomus jugulotympanic tumors that involved both jugular foramen and middle ear. The main MRI features of paragangliomas in this group included： obvious hyperintensity of parenchyma of tumors on T2-weighted imaging, obvious enhancement of parenchyma of tumors on contrast-enhanced T1-weighted imaging and intertumoral punctate, serpentine areas of signal void representing small vessels called as “pepper”, which interspersed among hyperintensity of parenchyma of tumors called as “salt”. The occurring ratio of this “salt and pepper” sign was 81.3% （13/16）. [Conclusion] MR imaging could clearly demonstrate the shape, size, border, infiltrating range of paragangliomas of skull base and relationship between tumors and adjacent structures. It was a good choice for diagnosis of this kind of tumors with MRI.
出处
《中山大学学报（医学科学版）》
CAS
CSCD
北大核心
2005年第5期592-595,共4页
Journal of Sun Yat-Sen University:Medical Sciences
