CT and MRI features of intracranial germ cell tumors

摘要: The computed tomographic (CT) and magnetic resonance imaging (MRI) features of 73 histologically proven primary intracranial germ cell tumors were analysed. CT images available for all patients, 22 them also examined by MRI. classified as germinoma, mature teratoma, immature or malignant yolk sac tumor, choriocarcinoma, embryonal carcinoma mixed type. Germinoma was revealed a high slightly high-density area on plain scan, enhanced homogeneously. MRI iso low signal intensity T1-weighted images, iso-or T2-weighted images. Mature which had clear margin neuroradiological characterized density scans, often showing large cysts calcification. Immature teratoma similar pattern to that but the cystic components calcification tended be less smaller respectively. tumor obscure in perifocal edema observed some cases. shape irregular. Plain scan an low-density mass with good heterogeneous enhancement. Perifocal In tumors, useful detecting teratomatous components, particularly fatty components. Although definite histological diagnosis cannot achieved and/or alone, detailed analysis are predicting diagnosis.