儿童颅内肿瘤的MRI表现和诊断

目的 分析131例儿童颅内肿瘤的MRI表现，总结MR诊断方法和步骤。资料与方法 就本院131例儿童颅内肿瘤的MRI表现作一回顾性分析，涉及肿瘤15种，其中胶质瘤39例，颅咽管瘤15例．髓母细胞瘤13例．室管膜瘤12例，垂体瘤9例，脑膜瘤8例，生殖细胞瘤7例，白血病和淋巴瘤6例，脂肪瘤5例，海绵状血管瘤4例，组织细胞瘤4例，胆脂瘤3例，脉络膜乳头状瘤2例，听神经瘤2例．血管母细胞瘤2例。结果 93例获得病理证实，MRI诊断与病理符合82例，正确率88．2％。结沦 只要掌握好儿童颅内肿瘤的特点和正确的MRI诊断方法、步骤，就可能对儿童颅内肿瘤作出准确的定位、定性诊断。

MRI Diagnosis of Intracranial Tumors in Children

Objective To analyze MRI features and diagnosis of intracranial tumors in children.Materials and Methods MRI findings in 131 pediatric patients with intracranial tumors were retrospectively analyzed. Fifteen kinds of tumor were found in these patients. The lesions included glioma (n=39), craniopharyngioma (n=15), medulloblastoma (n=13), ependymoma (n=12), pituitary tumor (n=9), meningioma (n=8), germinoma (n=7), leukemia and lymphoma (n=6), lipoma (n=5), hemangioma (n=4), histocytosis X (n=4), epidermoid cholesteatoma (n=3), choroidal papilloma (n=2), acoustic neuroma (n=2) and hemangioblastoma (n=2).Results Of 131 cases, the diagnosis was pathologically confirmed in 93. MRI diagnosis was compatible with the pathology in 82 cases, with an accuracy of 88.2%. Conclusion A knowledge of the MRI features of pediatric intracranial tumors is of great importance for making a correct diagnosis.