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目的探讨鼻咽癌侵犯翼腭窝的MRI表现特点。方法对46例具完整的临床和MRI资料并经病理活检证实的鼻咽癌翼腭窝受侵者行回顾性分析。结果 46例中有53侧受侵,翼腭窝受侵的MRI表现为:正常脂肪信号被病灶取代46例;翼腭窝扩大33例;翼腭窝内异常强化肿块影23例;翼腭窝周壁骨质破坏21例。邻近组织结构受累情况:20例合并海绵窦破坏,28例侵犯蝶窦,27例侵犯破裂孔,5例卵圆孔受累。结论鼻咽癌侵犯翼腭窝具有特征的MRI表现,MRI能判断其侵犯和扩散的途径及邻近组织结构受累情况。
Objective To investigate the MRI features of nasopharyngeal carcinoma invading the pterygopalatine fossa. Methods Retrospective analysis of 46 cases of nasopharyngeal carcinoma with pterygopalatine fossa invaded by complete clinical and MRI data confirmed by pathological biopsy. Results Of the 46 cases, 53 cases were affected. The invasion of the pterygopalatine fossa fossa showed MRI with normal fat signal replaced by lesion in 46 cases, pterygopalatine fossa enlarged by 33 cases, pterygopalatine fossa with abnormal enhancement mass in 23 cases, pterygopalatine fossa Peripheral bone destruction in 21 cases. Adjacent tissue structure involvement: 20 cases of cavernous sinus destruction, 28 cases of sphenoid sinus invasion, 27 cases of invasive rupture, 5 cases of foramen ovale involvement. Conclusion The nasopharyngeal carcinoma has characteristic MRI manifestations in the pterygopalatine fossa. MRI can determine the way of infiltration and spread and the adjacent tissue structure.