摘要
【目的】探讨纵隔神经源性肿瘤 (NT)的影像学特征及其最佳影像学检查方法。【方法】对 38例纵隔NT的影像学表现进行了回顾性分析 ,其中神经鞘瘤 2 0例 ,神经纤维瘤 (NF) 13例 ,神经节细胞瘤 (GG) 3例 ,神经母细胞瘤 (NB) 1例 ,嗜铬细胞瘤 1例 ;均摄有胸部正侧位X线片 ,11例进行了CT检查 ,1例进行了MRI检查。【结果】其影像特征包括①后纵隔肿块伴邻近骨质受压吸收或椎间孔扩大 ;②胸正位平片上神经鞘瘤与NF大多呈球形 ,出现“沟征” ,而GG大多呈扁平状、长条状或半梭形 ,出现“胸膜外征” ;③一般不见气管食管受压移位。CT与MRI可更好地显示该类肿瘤的特征表现。【结论】纵隔NT有其特征性的影像学表现 ,胸正侧位X线片仍是该类肿瘤的首选检查方法 ,MRI是其最佳检查方法。
To investigate the imaging features and the best procedure of imaging examination for the detection and diagnosis of mediastinal neurogenic tumors (MNT).The imaging manifestations of 38 cases with MNT were analyzed retrospectively, including 20 cases of neurilemmoma ,13 cases of neurofibroma, 3 cases of ganglioneuroma , 1 case of neuroblastoma and 1 case of chromaffinoma . Chest X-ray films in the postero-anterior (PA) and lateral view were taken in all cases, CT examination was performed in 11 cases, and 1 case was subjected to magnetic resonance imaging(MRI) examination.The imaging features of MNT involved : ①posterior mediastinum mass with compressed bony absorption in adjacent location or intervertebral foramen enlargement;② in all cases of neurilemmoma and neurofibroma, PA plain chest film displayed globular shaped tumors and ”groove sign”,but most of the ganglioneuroma presented flat , longitudinal or semifusiform shapes, and ”extra-pleura sign”; ③displacement of trachea and esophagus was not found. CT and MRI could better show the imaging features of MNT.[Conclusion]MNTs possess characteristic imaging manifestations. PA and lateral plain chest films are still the first choice of examination for this kind of tumors, anyhow MRI is the best imaging technique for accurate detection.
出处
《医学临床研究》
CAS
2004年第5期478-480,共3页
Journal of Clinical Research
