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颅内软骨瘤7例MR分析 被引量:4

Analysis of MR features in intracranial chondroma:7 cases report
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摘要 目的探讨颅内软骨瘤的MR特征以提高其诊断水平。方法回顾性分析7例经病理证实的颅内软骨瘤的MR表现。结果 7例肿瘤中,位于鞍区3例,前颅窝底2例,大脑镰旁及颞部各1例。MR检查示:肿瘤在T1WI上呈不均匀等低信号,其中1例夹杂片状高信号,在T2WI中呈以片带状高信号为主的混杂信号;1例高信号区呈囊泡状改变,其钙化部分6例在T1WI及T2WI中均为低信号影;1例在T1WI中为高信号,在T2WI中为等低信号影;注射Gd-DTPA增强扫描,5例瘤周呈花环状强化,2例周缘强化不明显,瘤内呈斑片状不均匀轻度强化,所有病例边界清晰,均未见瘤周水肿及瘤内出血。结论颅内软骨瘤好发于颅底及大脑镰区,钙化多见,具有延迟强化特点,确诊依靠病理检查。 Objective To explore the MR character of intracranial chondroma and to improve the diagnostic accuracy. Methods A retrospective analysis of MR imaging was made on 7 cases with pathologically demonstrated intracranial chondroma. Results Among the 7 cases of intracranial chondroma,3 cases were located at the saddle area,2 cases were located at the anterior cranial fossa,1 case was at cerebral falx and lease was at temporal region.Signal intensities of these lesions were low-intermediate on T1 weighted images(T1WI),one of these lesions were with high signal,and revealed extremely inhomogeneous high signal on T2WI,1 case revealed vesicle-like changes,and calcification of all these cases were low signal on both T1WI and T2WI except 1 case which was showed high signal in T1WI and medium-low signal in T2WI;on the contrast enhanced images,5 cases were appeared ring like enhancement,2 cases with no obvious enhancement in the peripheral area, and all of these lesions showed patchy heterogeneous mild enhancement,clear boundaries can be seen in all cases,no peri-tumoral edema and tumor hemorrhage were found.Conclusion Intracranial chondroma commonly originated from the basal part of skull and region of falx cerebri,easily combined with calcification,and with characteristics of delayed enhancement,final diagnosis of intracranial chondroma relied on pathological result.
出处 《疑难病杂志》 CAS 2012年第5期361-363,共3页 Chinese Journal of Difficult and Complicated Cases
关键词 软骨瘤 颅内 磁共振成像 Chondroma intracranial Magnetic resonance imaging
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参考文献13

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共引文献16

同被引文献32

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