盆腔腹膜外间隙囊性畸胎瘤的CT/MRI诊断  

CT and MRI Diagnosis of the Cystic Teratoma in Pelvic Extraperitoneal Space

作　　者：辛顺宝[1] 郑程程[2] 侯成云[2] 岳英杰[2] 赵福香[2] 孙西河[1] 董鹏[1] 

机构地区：[1]潍坊医学院附属医院影像中心,山东潍坊261031 [2]潍坊医学院医学影像学系

出　　处：《潍坊医学院学报》2009年第6期455-456,共2页Acta Academiae Medicinae Weifang

基　　金：潍坊医学院大学生创新基金项目(课题编号:KX200829)

摘　　要：目的探讨CT和MRI对盆腔腹膜外间隙囊性畸胎瘤的诊断价值。方法回顾性分析经手术病理证实的4例盆腔腹膜外间隙囊性畸胎瘤的CT/MRI表现特征,着重观察病灶大小、密度/信号、边缘、强化特征,肿块所在的解剖部位及其与邻近组织器官的关系等。结果 4例均可见直肠受压移位,3例髂血管受压移位,2例肿块到达皮下或与臀部形成窦道。良性囊性畸胎瘤3例,恶性1例。CT表现为形态规则或不规则,边界清楚,液性或混杂密度,内可见脂肪、软组织、钙化及条形分隔,增强扫描囊壁及分隔呈不均匀中度强化;MRI表现为形态规则或不规则,边界清楚,液性或混杂信号,内可见出血、钙化及条状分隔。结论 CT/MRI能对盆腔腹膜外间隙囊性畸胎瘤做出准确的定位诊断,并能进行一定程度的定性诊断。Objective To study the CT/MRI diagnostic value for the cystic teratoma in pelvic extraperitoneal space. Methods Consecutive 4 cases of cystic teratoma proven by surgery and pathology were reviewed. Emphasis was focused on the size, density or signal, margin, contrast enhancement characteristics,location and relationship between the lesions and surrounding organs and tissues. Results All the cases showed the rectum displacement, 3 cases showed the iliac vessels displacement, 2 cases were under the skin or sinus tract was formed. There were benign tumors（ n = 3 ） and malignant tumor{ n = 1 ） in this study. Cystic teratoma showed regular/irregular masses with big volume, well-defined margin, aqueous/heterogeneous density, hemorrhages, calcifications, setuliform abjunctions, and peripheraL/abjunctions contrast enhancement. Conclusion CT/MR1 can determine the location of the lesion, and make a qualitative diagnosis to some degree.

关 键 词：盆腔腹膜外间隙 囊性畸胎瘤 体层摄影术 X线计算机 磁共振成像 

分 类 号：R445.3[医药卫生—影像医学与核医学]