MR不同序列在子宫内膜癌盆腔淋巴结中的检出准确性、特异度对比

Comparison of Accuracy and Specificity of Different MR Sequences in the Detection of Pelvic Lymph Nodes of Endometrial Cancer

目的对比MR不同序列在子宫内膜癌盆腔淋巴结中的检出准确性、特异度。方法统计分析2011年3月至2014年10月深圳市龙华新区人民医院医学影像科收治的子宫内膜癌患者64例的临床资料。结果 T1W1、T2W1、DWI检出淋巴结直径分别为(10.16±2.61)mm、(9.22±3.88)mm、(8.78±4.02)mm,最小经线分别为5mm、4mm、3mm,准确性分别为79.56%、80.68%、97.73%,特异度分别为91.89%、94.59%、90.09%。随访发现,64例患者中,24例患者术后复发,6例患者肝转移,6例患者死亡,分别占总数的37.5%、9.4%、9.4%;b=150×10-3mm2/s、800×10-3mm2/s、1000×10-3mm2/s时转移性淋巴结的ADC值均显著低于非转移性淋巴结(P<0.05)。结论 DWI较T1W1、T2W1在子宫内膜癌盆腔淋巴结中的检出具有较高的准确性,但具有较低的特异度。

Objective To compare the accuracy and specificity of different MR sequences in the detection of pelvic lymph nodes of endometrial cancer. Methods The clinical data of 64 cases of patients with endometrial cancer treated Medical Imaging department, People＇s Hospital, Longhua District from March 2011 to October 2014 were statistically analyzed. Results The diameter of detected lymph nodes of T1W1, T2W1, DWI were （10.16±2.61） mm, （9.22±3.88） mm, （8.78±4.02） mm, respectively, the warp minimum were 5mm, 4mm, 3mm, the accuracy were 79.56%, 80.68%, 97.73%, the specificity were 91.89%, 94.59%, 90.09%. Follow-up found that among the 64 cases of patients, 24 cases recurred, 6 cases had metastases, 6 cases died, 37.5%, 9.4%, 9.4% of the total, respectively;when b=150×10^-3mm^2/s, 800×10^-3mm^2/s, ADC values of 1000×10^-3mm^2/s, the metastatic lymph nodes were significantly lower than non-metastatic lymph nodes （P〈0.05）. Conclusion Compared to T1W1, T2W1, DWI has higher accuracy, but has lower specificity in the detection of pelvic lymph nodes of endometrial cancer.