高场强磁共振对易漏诊误诊的子宫内膜异位囊肿小病灶的诊断价值

The Diagnostic Value of High Field MRI in Misdiagnosis of Small Focus of Endometriosis Cyst

目的:探讨高场强磁共振对容易漏诊误诊的子宫内膜异位囊肿小病灶的诊断价值。方法:回顾性总结8例术前B超及MRI检查漏诊误诊且经手术病理证实的子宫内膜异位囊肿小病灶,观察其在高场强MRI上的表现,分析漏诊误诊的原因。所有患者均行盆腔横轴位T1WI、T2WI、T1WI压脂、T2-tirm和横轴位脂肪抑制T1WI动态增强序列检查,部分患者行横轴位DWI检查(7例)。结果:7例漏诊的主要原因是病灶小,诊断医师疏忽大意或对发现小病灶的方法认识不足,1例误诊的主要原因是对子宫内膜异位囊肿小病灶诊断的认识不足。结论:高场强磁共振能很好地显示子宫内膜异位囊肿小病灶,对发现容易漏诊误诊的子宫内膜异位囊肿小病灶具有很高的应用价值。

Objective:To explore the diagnostic value of high field MRI in misdiagnosis of small lesions of endometriosis cyst.Methods:8 cases of small lesions of endometriosis cyst which were misdiagnosed by B-ultrasound and MRI before operation and confirmed by operation and pathology were reviewed. The manifestations of high field MRI were observed and the causes of misdiagnosis were analyzed All patients were examined with dynamic contrast-enhanced sequence of T1 WI, T2 WI, T1 WI lipidemia, T2 TIRM and T1 WI fat suppression in transverse axial position. Some patients were examined with DWI in transverse axial plane(7 cases).Results:The main reason of missed diagnosis(7 cases) was that the focus was too small, the diagnosis doctors were careless or didn’t know enough about the method of finding small focus. The main reason of misdiagnosis(1 case)was that the diagnosis of small focus of endometriosis cyst was not enough.Conclusion:High field MRI can show the small lesions of endometriosis cyst well, and it has high application value in finding the small lesions of endometriosis cyst which are easy to be missed and misdiagnosed.