MRI诊断鼻咽癌的评价

Evaluation of MRI in the diagnosis of nasopharyngeal carcinoma

目的探讨ＭＲＩ对鼻咽癌的诊断价值。方法分析４５例经病理证实的鼻咽癌者的ＭＲＩ表现。采用Ｓｉｅｍｅｎｓ公司Ｉｍｐａｃｔ型超导磁共振成像仪行鼻咽部ＭＲＩ扫描。结果肿块突入鼻咽腔致咽隐窝变平、消失或两侧不对称３７例，为最常见表现；周围深部组织浸润３０例，其中腭帆提肌和腭帆张肌肿胀、脂肪间隙消失多见；伴颅底侵犯１４例，海绵窦侵犯５例；淋巴结转移１７例，脑内转移３例，球后受累３例。结论磁共振对显示鼻咽癌的侵犯范围、方式和程度有重大价值，是优良的诊断方法。对鼻咽癌的早期诊断有一定的特异性。

Objective To study the value of MRI in the diagnosis of nasopharyngeal carcinoma (NPC) patients. Methods To analyses the MRE features of 45 NPC patients proved by pathology, and to scan nasopharynx with 1 0 T superconductive MRI system (Impact, Siemens). Results 37 cases with masses invading nasopharyngeal cavity, and blunting or loss or asymmetry of Rosenmuller fossa were the most common manifestation; 30 cases were found with infiltrating surrounding deep tissue, especially swelling of palatosalpingeus and levator veli palatini and lossing of adipose space; 14 cases with infiltrating the base of skull; 5 cases with infiltrating cavernous sinus, 17 cases with lymphonodi metastases, 3 cases with intracerebral metastases, and 3 cases with implicating postbulb. Conclusion MRI is a good diagnostic method beneficial to scanning the range, passage and extent of NPC, showing certain specificity in the preliminary diagnosis of NPC.