恶性蝾螈瘤的CT及MRI表现(附3例报告及文献复习)  

CT and MRI Manifestations of Primary Malignant Triton Tumor:A Report of 3 Cases with Review of the Literature

作　　者：任静[1] 常英娟[1] 宦怡[1] 刘莹[1] 刘燕丽[1] 

机构地区：[1]第四军医大学西京医院放射科,陕西西安710032

出　　处：《实用放射学杂志》2008年第1期84-86,96,共4页Journal of Practical Radiology

摘　　要：目的提高对恶性蝾螈瘤的影像学认识。方法报告3例经病理证实的恶性蝾螈瘤的CT和MRI表现,并作文献复习。结果本组3例罕见的恶性蝾螈瘤,1例原发于前列腺伴有肺转移和神经纤维瘤病Ⅰ型,1例发生于左侧臀部,1例发生于右侧上颌窦伴有窦壁骨质破坏。CT和MRI表现为较大的软组织肿块影,强烈提示恶性肿瘤,T2WI均呈高信号,其内可见环形低信号分隔影。结论恶性蝾螈瘤尽管最终确诊需依赖病理组织学检查,CT和MRI在定位诊断及鉴别良恶性方面具有重要作用。Objective To improve the understanding of malignant triton tumor on imaging findings. Methods CT and MRI findings of rare malignant triton tumor in 3 cases confirmed histologically were analysed with review of the literatures. Results 3 tumors included prosta- tic malignant triton tumor with pulmonary metastatic tumors and neurofibromatosis -Ⅰ in 1 case,left haunch malignant triton tumor in 1 case and right maxillary sinus malignant triton tumor with destruction of maxillary sinus paries in 1 case. The imaging appearances of tumors were the huge soft tissue mass which strongly suggested malignant tumors,high signal intensity on T2WI,circular septa inside the tumors with low signal intensity. Conclusion Although the qualitative diagnosis of malignant triton tumor depends on pathological examination, CT and MRI play a useful role in diagnosis and differential diagnosis of this tumors.

关 键 词：恶性蝾螈瘤 磁共振成像 体层摄影术 X线计算机 

分 类 号：R739.43[医药卫生—肿瘤] R445.2[医药卫生—临床医学]