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目的探讨产前MRI诊断胎儿卵巢囊肿的影像学表现及应用价值。方法对13例胎儿卵巢囊肿MRI表现进行回顾性研究,并与产后进行比较,分析病变的位置、形态、大小、信号特征。结果 13例胎儿卵巢囊肿,10例内部呈均匀囊性信号,1例信号混杂不均匀,1例内可见分隔,1例可见分层。MRI影像学特征表现为胎儿腹部囊性包块,边界光滑,位置可出现变化。结论胎儿卵巢囊肿MRI表现具有一定的特征,MRI能在产前超声的基础上对胎儿卵巢囊肿进行诊断及鉴别诊断。
Objective To investigate the imaging findings and application value of prenatal MRI in the diagnosis of fetal ovarian cysts. Methods The MRI findings of 13 cases of fetal ovarian cysts were retrospectively studied and compared with postpartum. The location, shape, size and signal characteristics of the lesions were analyzed. Results Fetal ovarian cysts were found in 13 cases, homogeneous cystic signals were observed in 10 cases, heterogeneous signal mixed in 1 case, segregation in 1 case and stratification in 1 case. MRI features of the fetus showed cystic mass of the abdomen, the boundary is smooth, the location may change. Conclusion MRI findings of fetal ovarian cysts have certain characteristics. MRI can diagnose and differentiate fetal ovarian cysts on the basis of prenatal ultrasound.