常用影像学检查在下颌下腺疾病诊断中的应用价值

The value of imaging methods in diagnosis of submandibular gland diseases

目的:分析临床常用下颌下腺疾病影像学诊断方法的优缺点,探讨其在下颌下腺疾病诊断中的应用价值。方法:对182例已行下颌下腺摘除术的患者术前影像学检查结果进行分析,与术后病理学结果进行对照。所得数据采用SAS8.0软件包进行分析,选用Fisher确切概率计算法比较B超、CT、MRI组间差异有无统计学意义。结果:182例病例中,术前B超、CT、X线检查结果与病理结果对照后符合率分别为85.34%、79.66%和92.31%,MRI符合率最高,诊断准确性优于B超、CT(P<0.05)。结论:本研究显示,B超、CT、X线诊断下颌下腺疾病存在一定的误诊率,特别是下颌下腺炎,是误诊后造成下颌下腺切除率较高的重要原因之一。MRI准确率较高,在下颌下腺疾病诊断中具有重要的应用价值。

PURPOSE： To retrospectively analyze the advantages and disadvantages of imaging methods commonly used for diagnosis of gland submandibular diseases. METHODS： One hundred and eighty-two patients with submandibular gland surgery were retrospectively studied to compare the accuracy rate between preoperative imaging and postoperative diagnosis. The data were analyzed using SAS8.0 software paekage.Fisher＇s exact test was used to compare the difference between B type uhrasonography,CT and MRI. RESULTS： Compared with postoperative pathological results,diagnostic accuracy rate of B type ultrasonography,CT and X-ray was 85.34%,79.66% and 92.31% ,respectively. MRI had a higher accuracy rate than B type uhrasonography or CT. （P〈0.05）. CONCLUSION： B type uhrasonography, CT and X-ray examination have misdiagnosis especially in submandibular sialadenitis,which is one of the most important causes of misdiagnosis leading to excision of the glands.MRI has higher application value in diagnosis of submandibular gland diseases.Supported by Research Fund of Science and Technology Commission of Shanghai Municipality （Grant No.08DZ2271100）.