胼胝体脂肪瘤的CT和MRI诊断  

Lipoma of the Corpus Callosum:CT and MRI

作　　者：徐文坚[1] 张云亭[2] 刘松龄[2] 徐爱德[1] 吴恩惠[2] 

机构地区：[1]青岛大学医学院附属医院放射科,山东青岛266003 [2]天津医科大学总医院放射科

出　　处：《实用放射学杂志》2003年第4期293-295,共3页Journal of Practical Radiology

摘　　要：目的　研究胼胝体脂肪瘤的CT和MRI征象及诊断价值。方法　 1 8例胼胝体脂肪瘤 ,男 1 0例 ,女 8例 ,年龄 2个月～ 55岁。均行头颅CT和MRI平扫 ,同时行MRI脂肪抑制成像。结果　 1 4例单发 (77.8% ) ,4例多发 (2 2 .2 % )。曲线型 1 4例(77.8% ) ,管结节型 4例 (2 2 .2 % )。CT表现为低密度区 (CT值 - 4 4～ - 71HU) ,MRI表现为短T1 、中长T2 和高质子密度信号 ,在各序列上均与脂肪组织信号同步。 1 2例 (66 .7% )合并颅内外的单或多部位发育异常 ,包括胼胝体发育不良或缺如 ,透明隔缺如 6例 ,颅内其他部位多发脂肪瘤 4例 ,灰质异位 2例 ,脑裂畸形、巨脑回、蛛网膜囊肿、额顶皮下脂肪瘤及局部颅骨缺损各 1例。结论　胼胝体脂肪瘤在CT和MRI上有特征性表现。本病常合并颅内外的各种先天性发育异常。MRI检出本病优于CT。Objective To study features of callosal lipoma and the value of CT and MRI in the diagnosis.Methods Eighteen patients with callosal lipomas include 10 males and 8 females. They were all performed CT and MRI scan.Results Four cases(22.2%) were multiple lipomas, fourteen(77.8%) were solitary; four cases(22.2%) were tubulonodular type, and fourteen(77.8%) were curvilinear type. The leisions were showed areas of hypodensity on CT and high signal on T 1WI with middle signal on T 2WI. They were isointensity with fat tissue on each MRI sequences. Twelve patients(66.7%) were associated with solitary or multiple intracranial/extracranial anomalies. Conclusion The callosal lipomas usually associated with solitary or multiple intracranial/extracranial congenital anomalies. And the leisions can be diagnosed by CT and MRI.

关 键 词：胼胝体脂肪瘤 CT MRI 诊断 

分 类 号：R730.262[医药卫生—肿瘤]