鼻咽癌的MRI诊断

目的:探讨鼻咽癌的MRI表现及临床价值。方法:回顾性分析经病理证实的8例鼻咽癌的MRI表现。结果:鼻咽癌的MRI表现为鼻咽壁局限性或弥漫性增厚,咽隐窝闭塞,咽鼓管咽口变浅或消失,可伴有咽旁间隙、咽后间隙、头长肌受压或浸润及颈部淋巴结的转移,可见乳突积液,颅底骨质破坏。肿瘤T1WI呈等或低信号,T2WI呈较高信号。GdDTPA增强后T1WI呈中等以上强化。结论:MRI成像能多方位清晰显示鼻咽癌瘤灶及侵犯范围,明显优于其他影像学检查方法。

MRI Diagnosis of the Nasopharyngeal Carcinoma

Objective To discuss MRI diagnosis of the nasopharyngeal carcinoma and its clinical value. Methods MRI feature of the nasopharyngcal carcinoma in 8, pathologically proved cases were analyzed. Results MRI findings of nasopharyngeal carcinoma appeared as diffusely or locally thickened nasopharyngeal walls,and pharyngeal recess was closed and pharyngeal opening of auditory tube became shallow or disappeared, sometimes with parapharyngeal space,retropharyngeal space and logus capitis oppressed or invaded. Mastoid effusion and lymph of neck metastases and bones of base of skull destruction could be seen. The tumor showed hypointense on T1WI and hyperintense on T2WI and moder ate enhancement after bolus intravenous Gd-DTPA. Conclusion MR imaging can show thc local tumor and extension of the nasopharyngeal carcinoma clearly on multi planes and angels. MR imaging is superior to othcr imaging examination means.