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目的比较彩色B超与MRI在鼻咽癌N分期和淋巴结转移诊断中的价值。方法 65例鼻咽癌患者于治疗前行彩色B超和MRI检查(颈部淋巴结)。依随访结果,比较彩色B超和MRI在鼻咽癌N分期和颈部淋巴结转移诊断中的作用。结果按福州分期原则,彩色B超、MRI的N分期准确率分别为66.2%(43/65),98.4%(64/65),两者比较差异有统计学意义(P<0.05);65例患者的364个颈淋巴结的随访结果显示,阳性201个,阴性163个,彩色B超诊断颈部转移淋巴结的敏感性、特异性、准确性分别为97.7%,86.7%,87.4%,而MRI分别为96.0%,98.5%,96.9%,两者各指标间比较,在敏感性方面差异无统计学意义(P>0.05),而在特异性和准确性方面两者差异均有统计学意义(P<0.05)。结论在鼻咽癌的N分期诊断方面MRI较彩色B超准确;MRI判断鼻咽癌颈淋巴结转移在敏感性方面和彩色B超无差异,在特异性、准确性方面较彩色B超准确,但也应警惕其假阳性和假阴性的判断。
Objective To compare the diagnostic value of color B ultrasound and MRI in the diagnosis of N-stage and lymph node metastasis of nasopharyngeal carcinoma. Methods Sixty - five patients with nasopharyngeal carcinoma underwent color ultrasound and MRI (neck lymph node) before treatment. According to the follow-up results, the role of color B-ultrasound and MRI in the diagnosis of nasopharyngeal carcinoma N-stage and cervical lymph node metastasis was compared. Results According to the principle of staging in Fuzhou, the accuracy of N staging of color B ultrasound and MRI was 66.2% (43/65) and 98.4% (64/65), respectively, with significant difference between the two groups (P <0.05); 65 The follow-up results of 364 cervical lymph nodes showed that the sensitivity, specificity and accuracy of positive 201, negative 163 and color B ultrasound in diagnosis of cervical lymph node metastasis were 97.7%, 86.7% and 87.4% respectively (96.0%, 98.5%, 96.9% respectively). There was no significant difference in sensitivity between the two indexes (P> 0.05), but there was significant difference in specificity and accuracy (P <0.05). CONCLUSIONS MRI is more accurate than color B in the diagnosis of nasopharyngeal carcinoma by N staging. MRI has no difference in sensitivity and color B ultrasound in judging cervical lymph node metastasis of nasopharyngeal carcinoma, but it is more accurate and accurate than color B in terms of specificity and accuracy Should also be wary of its false positive and false negative judgments.