纵隔囊性畸胎瘤32例影像学分析  

lmaging Analysis of Thirty-two Cases with Mediastinal Cystic Teratoma

作　　者：汤嘉泉[1] 黄忠雄[1] 

机构地区：[1]湖南省郴州市第一人民医院放射科,湖南郴州423000

出　　处：《医学临床研究》2004年第4期375-377,共3页Journal of Clinical Research

摘　　要：【目的】探讨囊性畸胎瘤的影像学诊断及检查方法的优选。【方法】报道囊性畸胎瘤 32例 ,全部病例均有胸部正侧位X线片 ,其中CT检查 1 1例 ,MRI检查 2例。对其影像学表现进行回顾性分析。【结果】32例中胸片上 2 3例可见典型胸膜外征 ,3例表现“非典型胸膜外征” ,6例表现“沟征” ,胸片术前诊断正确率仅1 5 .6 % ,而CT检查为 6 3.6 % ,2例MRI检查诊断正确。【结论】胸部正侧位X线片为该病的首选检查 ,但确诊有依赖CT或MRI检查 ,CT显示肿块为囊肿特性 ,若同时含有脂肪灶或块状骨化或牙齿则具有特征性。由于MRI对显示钙化与骨质效果差 ,因此作者认为CT为该病最佳检查方法 ,宜常规应用。To investigate the imaging diagnosis and best choice of examination methods in mediastinal cystic teratoma (MCT).Chest X-ray films at the front and lateral sites were taken in all 32 cases of MCT; CT scanning and magnetic resonance imaging (MRI) were performed in 11 and 2 cases, respectively. The imaging manifestations in all cases were analyzed retrospectively.Typical extra-pleura signs were demonstrated on chest films in 23 out of 32 cases, non-typical extra-pleura signs in 3 cases and ”groove sign” in 6 cases were found on chest posteroanterior (PA) plain films. Accuracy rate of diagnosis in chest plain films before operation was only 15.6% , but that of CT scanning was 63.6% ; diagnosis based on MRI was correct in 2 cases.[Conclusion]Chest X-ray plain film (PA and lateral film) is the first choice for examination of MCT. But its confirmative diagnosis still depends on CT or MRI examination .CT scanning can display a focal mediastinal mass containing fluid, fat or calcified substances, such as ossified patches or teeth. Because calcification and teeth can not be clearly visible by chest MRI, the authors suggest that CT is the best imaging technique in the diagnosis of MCT and should be used as a routine procedure.

关 键 词：纵隔囊性畸胎瘤 影像学分析 影像学诊断 X线片 回顾性分析 

分 类 号：R734.5[医药卫生—肿瘤]