松果体区肿瘤的MRI表现与其病理学对照研究

目的探讨不同病理性质的松果体区肿瘤MRI表现,评价其临床诊断价值。方法回顾性分析1999年1月至2009年1月经开颅手术治疗的131例松果体区肿瘤患者的MRI及病理学资料,并进行对比分析。结果这131例松果体区肿瘤中,纯生殖细胞瘤21例,畸胎瘤18例,混合性生殖细胞肿瘤12例,绒毛膜癌6例,胚胎性癌2例,内胚窦瘤1例,神经上皮肿瘤27例,松果体实质肿瘤17例,脑膜瘤14例和其它肿瘤13例。本组生殖细胞肿瘤60例,MRI增强后均有不同程度的强化,含有小囊状改变39例;其中生殖细胞瘤21例,5例MRI有较典型蝶形征;畸胎瘤18例,13例MRI有较典型的峰窝状改变;绒毛膜癌6例,5例MRI示出血。脑膜瘤14例,MRI示边界清楚,增强扫描均明显均匀强化,局部硬膜增厚6例;松果体实质肿瘤17例、神经上皮肿瘤27例及其他肿瘤13例,MRI表现各式各样。结论松果体区肿瘤的MRI表现与病理类型有关,部分MRI征象对一些肿瘤的诊断有较大特异性,但敏感度不高,依据MRI仍不能完全鉴别出松果体区肿瘤的病理性质。

Relationship of manifestations of pineal region tumors on MRI with their pathology

Objectives To study the manifestations of differently pathological pineal region tumors on MRI and evaluate the MRI value to their diagnosis.Method The pathological data of 131 cases of pineal region tumors,which were removed by microsurgery from January,1999 to January,2009,were compared with their manifestations on preoperative MRI.Results Of 131 cases of pineal region tumors,21 were germinomas,18 teratomas,6 choriocarcinomas,2 embryonal careinomas,1 endodermal sinus tumor,12 mixed germ cell tumors,27 neu...