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目的探讨MR在桥小脑角肿瘤诊断中的定位、定性能力。方法回顾性分析65例经手术病理证实的桥小脑角肿瘤患者的MRI表现。使用SE、TSE序列,平扫TWI、TWI,增强TWI,121轴位、冠状位。结果68例桥小脑角肿瘤中听神经瘤31例,MRI表现除有包膜、易囊变外,多有病侧听神经的增粗;表皮样囊肿12例沿脑沟池生长,占位效应小,增强后无强化;脑膜瘤7例,瘤体信号均匀,强化明显且有脑膜尾征,同侧听神经正常显示;三叉神经瘤6例,瘤体呈哑铃形生长,病侧三叉神经增粗或被瘤体代替;血管母细胞瘤6例,为典型的大囊小结节形状;脊索瘤5例,发生于斜坡并使斜坡破坏,瘤体信号混杂,对周围骨质有溶骨性破坏,增强后强化不均匀。颈静脉球瘤1例,发生于颈静脉孔处,瘤体内有流空的血管影,增强后明显强化。本组病例总体定位准确率100%,定性95%。结论MR在桥小脑角肿瘤的诊断价值在于定位、定性准确率高,可为临床制定治疗计划及判断预后提供可靠的依据。
Objective To investigate the localization and characterization of MR in the diagnosis of cerebellopontine angle tumor. Methods The MRI findings of 65 patients with cerebellopontine angle tumor confirmed by surgery and pathology were retrospectively analyzed. Using SE, TSE sequence, plain scan TWI, TWI, enhanced TWI, 121 axis, coronal. Results There were 31 acoustic neuromas in the cerebellopontine tumors of the cerebellopontine angle. Among them, there were 31 patients with acoustic neuroma in the cerebellopontine angle tumors. In addition to the capsule, Enhancement in the absence of enhancement; meningioma in 7 cases, the tumor signal uniformity, obvious enhancement and a meningeal tail syndrome, ipsilateral auditory nerve normal display; 6 cases of trigeminal neuroma, dumbbell-shaped tumor growth, the lesion side of the trigeminal nerve thickening or being Tumor, 6 cases of hemangioblastoma, typical nodular shape of large capsule; 5 cases of chordoma, occurred in the slope and slope damage, tumor signal mixed with osteolytic destruction of the surrounding bone, enhanced After the uneven reinforcement. One case of jugular bulboma occurred in the jugular foramen. There was an empty blood vessel in the tumor, which was obviously enhanced after the enhancement. The overall positioning of this group of patients with 100% accuracy, 95% qualitative. Conclusions The diagnostic value of MR in cerebellopontine angle tumor lies in its localization and high qualitative accuracy, which can provide a reliable basis for clinical treatment planning and prognosis.