颅内生殖细胞瘤的影像学表现

目的分析颅内生殖细胞瘤的临床表现及影像学特征。方法收集经手术和病理证实的、影像资料完整的颅内生殖细胞瘤患者38例的临床资料，并进行影像学分析。结果38例肿瘤中，病变位于鞍区11例（29％），松果体区13例（34％），基底节区14例（37％）。松果体区生殖细胞瘤为等T1，等或稍长T2信号，均匀、明显强化；丘脑和基底节区多表现为混杂T1和混杂长T2信号，斑片样、囊壁环形强化，或环形分隔样增强。结论颅内生殖细胞瘤病变多位于松果体区、鞍区或基底节区，结合影像学检查有助于其诊断。

Imaging Performance of Intracranial Germinoma

Objective To study the clinical and MR features of intracranial germinoma. Methods 38 patients with intracranial germinoma confirmed histologically and radiotherapy were selected as the object of this study. CT and MR findings of germinoma were analysed retrospectively. Results Of 38 cases,the tumors were located atpineal region in 13,the basal ganglia and thalamus in 14 and the sellar in 11. The pineal region germinoma demonstrated equal T1 and long or equal T2 signal on MRI,and had evident and homogeneous enhancement. The sellar region germinoma was classified into three classes based on its location;the germinoma in basal ganglia and thalamus had mixed T1 and mixed T2 signal on MRI and had evidently hetergeneous enhancement. Conclusion The intracranial germinoma in pineal region and sellar region or saddle basal ganglia more lesions ,the combination of imaging examination to the diagnosis.