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目的 :探讨四脑室区肿瘤的CT和MRI诊断价值。材料和方法 :分析 3 1例经手术、病理证实的四脑室区肿瘤的CT和MRI好发年龄、部位和图像特征。结果 :检出髓母细胞瘤 9例 ,室管膜瘤 8例 ,表皮样囊肿 4例 ,脉络丛乳头状瘤 3例 ,血管母细胞瘤 2例 ,室管膜囊肿 1例 ,海绵状血管瘤 1例 ,生殖细胞瘤 1例。结果提示 :( 1)不同的四脑室区肿瘤各具其影像学特征 ;( 2 )四脑室区常见肿瘤具有年龄特征 ;( 3 )肿瘤来源的判断可帮助肿瘤定性的诊断。结论 :CT和MRI检查对四脑室区肿瘤的诊断和鉴别诊断有主要价值 ,以MRI为首选方法。
Objective: To investigate the value of CT and MRI in the diagnosis of four-ventricle tumors. MATERIALS AND METHODS: The CT, MRI features, age, location, and imaging features of 31 cases of surgically and pathologically confirmed IV ventricle tumors were analyzed. Results: 9 cases of medulloblastoma, 8 cases of ependymomas, 4 cases of epidermoid cysts, 3 cases of choroid plexus papilloma, 2 cases of hemangioblastoma, 1 case of ependymal cyst, cavernous hemangioma 1 case, germ cell tumor in 1 case. The results suggest that: (1) different four-ventricle tumor with its imaging features; (2) four-ventricle area of common tumors with age characteristics; (3) the source of the tumor can help determine the qualitative diagnosis. Conclusion: CT and MRI examination of the fourth ventricle tumor diagnosis and differential diagnosis of major value, with MRI as the preferred method.