视网膜母细胞瘤的CT诊断及鉴别诊断  

CT diagnosis and differential diagnosis of retinoblastoma

作　　者：杜兴伟[1] 张伟国[1] 王毅[1] 

机构地区：[1]第三军医大学大坪医院野战外科研究所放射科,重庆400042

出　　处：《第三军医大学学报》2005年第19期1973-1975,共3页Journal of Third Military Medical University

摘　　要：目的探讨视网膜母细胞瘤的CT表现及诊断价值。方法收集1997年7月至2005年3月本院经手术和病理证实的视网膜母细胞瘤23例,对其CT、临床和病理检查资料进行回顾性分析。结果23例视网膜母细胞瘤发病年龄在4个月至9岁,平均年龄2.4岁。CT表现均以眼球后部软组织肿块为特征,显示为局限结节形、新月形、甚至充满整个眼球。19例肿块(82.6%)显示有钙化,其中呈不规则或细小点状钙化12例,斑片状或斑块状7例。5例(21.7%)伴视神经增粗,且1例沿视神经孔侵犯颅内。增强扫描显示肿瘤呈中等不均匀强化。结论CT可以显示肿瘤的形态、大小、内部特征及其累及范围,有助于视网膜母细胞瘤的诊断和鉴别诊断。Objective To explore the manifestation and diagnostic value of CT in retinoblastoma. Methods Twenty-three cases of retinoblastomas proven by operation and pathologic examination were collected. Their CT images, clinical symptoms and pathologic results were retrospectively analyzed. Results Twentythree patients of retinoblastomas aged from 4 months to 9 years （ mean 2.4 years）. CT images showed soft tissue mass （shaped as node, crescent-shaped or occupied the entire space of the eyeball） was in the globe of all cases. There was calcification in 19 cases （82.6%） , including “small pinch” in 12 cases or “patches” in 7 cases. Five cases were found the optic nerve thickened （21.7%） , and 1 case of intracranial invasion through the optic nerve canal （ 1/23 ） , and 6 cases of retina detachment （6/23）. The lesion showed mild or moderate enhancement after intravenous contrast medium were performed. Conclusion CT has an advantage on showing the size, shapes, intrastructures and invasive degree of the lesion, and is meaningful to the diagnosis and differential diagnosis of retinoblastoma.

关 键 词：视网膜母细胞瘤 断层摄影术 X线计算机 

分 类 号：R447[医药卫生—诊断学] R739.7[医药卫生—临床医学]