儿童颅内转移性肿瘤的CT特点  

CT Features of Intracranial Metastases in Children

作　　者：朱杰明[1] 李玉华[1] 金惠明[1] 沈玉成[1] 

机构地区：[1]上海第二医科大学附属新华医院放射科,上海第二医科大学附属新华医院儿外科

出　　处：《中国医学计算机成像杂志》1996年第1期42-45,共4页Chinese Computed Medical Imaging

摘　　要：目的：分析儿童颅内转移性肿瘤的ＣＴ特点。材料和方法：１６例颅内转移的原发灶中颅外神经母细胞瘤６例、颅内生殖细胞瘤４例、髓母细胞瘤２例、白血病２例、淋巴瘤１例和脑干肿瘤１例。１５例中原发灶或／和转移灶经组织学证实，仅１例脑干肿瘤及其转移为ＣＴ诊断。原发肿瘤诊断年龄从２至１３岁，平均８．７岁，从原发肿瘤诊断至发现转移的间隔时间从０至４２个月，平均１３．１个月。结果：柔脑膜转移在１６例中有１０例，占６２．５％：脑实质转移８／１６，占５０％：硬膜外转移４／１６，占２５％。结论：ＣＴ对各种类型颅内转移的诊断是有价值的。与成人相比，儿童脑外转移（硬膜外转移和柔脑膜转移１４／１６，占８７．５％）明显多于脑内转移（８／１６，占５０％），脑内转移主要是由柔脑膜转移而不是血行转移发展而来。To analyze the CT features of intracranial metastases in children. Materials and Methods: 16 primary tumors included 6 cases of neuroblastoma, 4 cases of germinoma, 2 cases of medulloblastoma, 2 cases of leukemia, one case of lymphoma and one case of brainstem tumor. Histological study of primary lesions and/or metastases were confirmed in all cases but one case that was diagnosed as brainstem tumor with CT, Age at the time of primary lesion diagnosed extending from 2 to 13 years, mean 8.7 years.The interval from primary lesion diagnosed to the discovery of metastasis, ranged from 0 to 42 months, mean 13.1 months.Results:In this series there were 10 cases of the leptomeningeal metaslasis (10/16,62.5%),8 cases of the cerebral metastasis (8/16, 50%) and 4 cases of the epidural metastasis (4/16,25%).Conclusion:CT is useful for diagnosis of the varient typies of intracranial metastases. In contrast to the adults, extracerebral metastases were more fraquent than intracerebral metastasis. Infra cerebral metastasis were dominantly resulted from leptomeningeal rather than blood dissemination in children.

关 键 词：转移性 CT 儿童 颅内肿瘤 

分 类 号：R739.410.4[医药卫生—肿瘤]