颅内生殖细胞瘤的MRI诊断

MRI diagnosis and differential diagnosis of intracranial germinoma

目的探讨颅内生殖细胞瘤的MRI表现及特征。方法回顾性分析30例颅内生殖细胞瘤的MRI表现。结果 30例中发生在松果体区15例,鞍区10例,基底节区丘脑5例。MRI表现为T1WI等或稍低信号、T2WI等或稍高信号,增强后除囊性部分未强化外,实性部分明显均匀强化。结论 MRI具有多方位成像及较好的软组织分辨率,可以清晰显示肿瘤部位及信号强度,再结合患者的性别、年龄及临床表现,有助于颅内生殖细胞瘤诊断及鉴别诊断。

Objective To discuss MRI features of intracranial germinoma. Methods The manifestations of 30 cases of intracranial germinoma were retrospectively analyzed. Results On T1 WI, the lesions were showed isointense or slightly hypointense. On T2WI, the lesions were showed isointense or slightly hyperintense. After Gd-DTPA, the solid part showed homogeneous enhancement, while cystic part was not enhanced. Conclusion Owing to muhi-dinlensional imaging and good soft tissue resolution, combined with patient sex, age and clinical manifestations, MRI could clearly display tumor position and signal strength, and help the diagnosis and differential diagnosis of intracranial germinoma.