11例子宫腺肉瘤的MRI表现及文献复习

Eleven cases of uterine adenosarcoma:MRI findings and literature review

目的总结分析子宫腺肉瘤的MRI表现,以加深对该疾病的认识,提高诊断准确性。方法回顾性分析11例经病理确诊为子宫腺肉瘤病人的临床、病理及影像资料,并复习相关文献。分析病灶的部位、大小、边界及MRI信号变化特点,以及表观扩散系数(ADC)值及动态增强时间-信号强度曲线(TIC)。结果11例子宫腺肉瘤病人均为单发病灶,MRI显示肿瘤位于子宫腔或宫颈管内,最大径为1.5~12 cm。T2WI及脂肪抑制(FS)T2WI上病灶内大部分呈高信号或稍高信号,其中4个呈散在小囊样结构。扩散加权成像(DWI)上8个呈高信号或稍高信号,3个呈中等信号;平均ADC值为(0.94±0.33)×10^(-3)mm^(2)/s。增强扫描11个均呈渐进性强化,其中2个呈网格样强化,TIC表现为Ⅰ型6个,Ⅱ型5个。结论子宫腺肉瘤的MRI表现具有特征性,对本病的准确诊断有一定帮助。

Objective To summarize and analyze the MRI findings of uterine adenosarcoma,deepen the systematic understanding and improve the diagnostic accuracy of this disease.Methods The clinical,pathological,and imaging date of11 patients with pathologically confirmed uterine adenosarcoma were retrospectively analyzed,and literatures were reviewed.The location,size,boundary,and signal of tumors were analyzed.The ADC values and time-intensity curve(TIC)of dynamic enhancement curves were obtained.Results On MRI,all patients presented as a single mass located in endometrial cavity and/or cervical canal.The maximum diameter ranged from 1.5 cm to 12 cm.The tumors mainly displayed as slightly hyperintense and hyperintense masses,and showed small hyperintense foci scattered in tumors in 4 cases on T2 WI and FS T2 WI.The tumors showed hyperintensity or mild hyperintensity in 8 cases and moderate signal intensity in 3 cases on DWI.The average ADC value was(0.94±0.33)×10^(-3)mm^(2)/s.All tumors showed progressive enhancement pattern,2 cases presented with grid-like enhancement.The TIC showed typeⅠin 6 cases and typeⅡin 5 cases.Conclusion The MRI findings of uterine adenosarcoma have certain characteristics,which are helpful for the accurate diagnosis of the disease.