摘要
目的 比较颈部神经鞘瘤的CT表现与相应的病理组织切片 ,了解产生特殊CT影像表现的病理基础。方法 经手术、病理证实的颈部神经鞘瘤 71例共 72个肿瘤 ,增强扫描 5 7个 ,平扫加增强扫描 15个。观察CT表现并与病理组织切片对照。结果 增强扫描表现特殊 :(1)均匀低密度背景伴团状高密度改变 (2 4/ 72 )。 (2 )弥漫点状改变 (2 0 / 72 )。 (3)低密度环伴中央弥漫点状改变 (5 / 72 )。(4)中央低密度伴不同形态的厚环改变 (8/ 72 )。 (5 )均匀密度 12个 ,其中等密度、低密度各 5个 ,囊性变 2个。 (6 )增强特别明显 3个。平扫表现以均匀密度为主 (10 / 15 ) ,如同时再行增强扫描 ,病灶又呈现出特征性的点状、团状改变 (9/ 10 )。上述现象和病理对照 ,低密度区由疏细胞区 (AntoniB区 )、陈旧性出血及囊性变组成 ;高密度区由富细胞区 (AntoniA区 )及胶原组成。不同的细胞区域构成形成不同的CT影像表现。增强扫描表现与AntoniA区容易增强有关。结论 颈部神经鞘瘤特殊的CT影像与其病理改变有关 ,掌握这些变化有助于正确诊断。
Objective To compare the special CT manifestations with corresponding pathologic tissue slices of cervical neurilemmoma and to investigate the pathologic fundament of those special findings. Methods Seventy two cervical neurilemmomas in 71 cases which were proved by operation and pathology from 1988,8 to 1999,3 were investigated.Of these tumors, 57 were scaned in enhancement, the other 15 tumors were examined with both unenhancement and enhancement. The manifestations of CT scans were compared with the results of pathology. Results The special manifestations of enhanced scans of cervical neurilemmoma were:(1) the high density corpses on the homogeneous low density background(24/72). (2)Diffuse spot changes which varied as high and low density(20/72).(3)Low density circle accompanied by diffuse spots in central area(5/72).(4)Different thick circles and the low density center(8/72).(5)12 tumors were homogeneous in density.Of them,5 cases were isodensity, 5 cases were low density, and 2 cases showed cystic changes.(6)3 cases were strongly enhanced. The main manifestations of unenhanced scans were homogeneous in density(10/15).The characteristic spots and crops enhancement was detected after the contrast was given(9/10). All of above CT manifestations were corresponding to pathology of cervical neurilemmoma. Antoni B, obsolete bleeding, and cystic changes showed the areas of low density. Antoni A and collagen were attributed to high density. Different cell distribution showed different CT image. There was a close relationship between Antoni A and enhanced scan. Conclusion The spacial CT manifestations of cervical neurilemmoma is due to its varied pathologic changes. The correct diagnosis could be established on the bases of understanding of pathology.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2000年第8期551-554,共4页
Chinese Journal of Radiology
关键词
颈部神经鞘瘤
头颈部肿瘤
病理学
CT
Neurilemmoma
Head and neck neoplasms
Tomography,X ray computed
Pathology
