...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Radiology >Sinonasal undifferentiated carcinoma: CT and MR imaging of an uncommon neoplasm of the nasal cavity.
【24h】

Sinonasal undifferentiated carcinoma: CT and MR imaging of an uncommon neoplasm of the nasal cavity.

机译：鼻腔未分化癌：鼻腔罕见肿瘤的CT和MR成像。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

PURPOSE: To determine the computed tomographic (CT) and magnetic resonance (MR) imaging appearance of sinonasal undifferentiated carcinoma. MATERIALS AND METHODS: Findings from 11 patients with histopathologically proved sinonasal undifferentiated carcinoma were retrospectively reviewed. All 11 patients had undergone CT, and six of them had undergone MR imaging. RESULTS: The tumors usually were large (larger than 4 cm in maximum dimension in eight patients), had poorly defined margins, and arose within the ethmoid sinuses and superior nasal cavity. The aggressive nature of the tumor was demonstrated by bone destruction (n = 10) and by invasion of adjacent structures, including paranasal sinuses (n = 10), anterior fossa (n = 7), orbits (n = 4), pterygopalatine fossa (n = 2), parapharyngeal space (n = 1), and cavernous sinus (n = 1). On contrast material-enhanced CT scans, all tumors were enhanced to varying degrees. They tended to be noncalcified (n = 10) and often caused sinus obstruction (n = 10). MR signal intensity of the lesions was isointense to muscle on T1-weighted images in all six patients and iso- to hyperintense on T2-weighted images in five patients. Heterogeneous enhancement of tumors was seen on gadolinium-enhanced images. CONCLUSION: Sinonasal undifferentiated carcinoma cannot be distinguished from other tumors of this region (with the possible exception of melanoma) on the basis of imaging features.
机译：目的：确定鼻窦未分化癌的计算机断层扫描（CT）和核磁共振（MR）成像外观。材料与方法：回顾性分析11例经病理组织学证实的鼻窦未分化癌患者的发现。所有11例患者均接受了CT检查，其中6例接受了MR成像。结果：肿瘤通常较大（八名患者的最大尺寸大于4厘米），边缘定义不清，并出现在筛窦和上鼻腔内。肿瘤的侵袭性表现为骨破坏（n = 10）和侵犯相邻结构，包括鼻旁窦（n = 10），前窝（n = 7），眼眶（n = 4），翼ery窝（ n = 2），咽旁间隙（n = 1）和海绵窦（n = 1）。在对比材料增强的CT扫描中，所有肿瘤均有不同程度的增强。他们倾向于不钙化（n = 10）并经常引起鼻窦阻塞（n = 10）。在所有6例患者中，病变的MR信号强度在T1加权图像上对肌肉等强度，在5例患者中T2加权图像上等强度至高强度。在g增强的图像上可以看到肿瘤的异质性增强。结论：根据影像学特征，鼻窦未分化癌不能与该区域的其他肿瘤（黑色素瘤除外）区分开。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号