目的 探讨超声评分法在体表高分化脂肪肉瘤(WDLPS)和良性脂肪瘤(LP)鉴别诊断中的价值,为两者的鉴别诊断和治疗方式选择提供依据。方法 回顾性分析经病理证实的 14 例(共15个肿块)体表WDLPS和 37 例(共40个肿块)LP临床资料及超声声像图特征,比较2组患者的发病年龄、性别、发病部位、肿块长径、短/长径比、肿块形态、边界、有无包膜、内部回声、回声分布、位置及血流分级等指标。筛选出有统计学差异指标,绘制ROC曲线,计算评分系统的诊断效能。结果 WDLPS和 LP患者在年龄、肿块长径、短/长径比值、有无包膜、位置以及血流分级6个指标有统计学差异(P＜0.05),对以上6个指标赋予0或1分建立病灶评分系统,总分0～6分。计算不同分值对WDLPS的诊断效能,以总分≥3分时诊断效能最高,灵敏度86.7%,特异度77.5%,正确率80%,阳性预测值59.1%,阴性预测值93.9%。结论 基于超声图像特征的评分方法在总分≥3分时,对术前鉴别WDLPS和LP具有较好的诊断效能,能够为临床治疗方案选择提供重要参考依据,值得推广应用。

Objective To evaluate the value of ultrasonography scoring system in differential diagnosis of well-differentiated liposarcomas (WDLPS) and benign lipoma (LP), and to provide evidence for the differential diagnosis and treatment choice. Methods Fourteen WDLPS cases (total of 15 masses) and 37 LP cases (total of 40 masses) were diagnosed by surgical histopathology, which clinical data and the ultrasound images were analyzed retrospectively. The parameters including age, gender, region, mass length, length/width ratio, shape, margin, envelope echoes, echogenicity, texture, location, blood flow were compared between the groups above. A scoring system was established by analyzing the parameters with statistical differences, and the ROC curve was plotted to calculate the best cut-off value and evaluate the diagnostic efficiency of the scoring system. Results There were statistically significant differences between two groups in the following six parameters: age, mass length, length/width ratio, envelope echoes, location, blood flow(P＜0.05). The scoring system was established by assigning 0 or 1 point to each factor, and the total score was 0～6 points. The highest diagnostic efficiency of WDLPS was observed at the cut-off value ≥ 3. The sensitivity, specificity, accuracy, the positive predictive value and the negative predictive value was 86.7%, 77.5%, 80%, 59.1%, 93.9% respectively. Conclusions The ultrasonography-based scoring system has a better diagnostic efficacy in differentiating WDLPS and LP, which can provide an important reference basis for the selection of clinical treatment, and is worthy of promotion and application.

目的 通过分析胎盘植入检出率、胎盘植入典型声像图特征及胎盘植入患者妊娠结局,探讨彩色多普勒超声检查在前置胎盘合并胎盘植入患者诊断中的应用价值。方法 回顾性分析2016年1月—2020年11月在广州市第一人民医院分娩的100例在产前超声检查中诊断为前置胎盘孕妇的临床资料及超声诊断资料。分析彩色多普勒检查在诊断前置胎盘合并胎盘植入中的灵敏度、特异度等指标;比较分析2组孕妇间年龄、流产和剖宫产次数及是否合并凶险性前置胎盘的情况;对比分析2组孕妇间胎盘分布情况、胎盘超声评分情况,分析胎盘植入的标志性超声声像图特征;分析2组孕妇分娩并发症及结局。结果 胎盘植入检出的灵敏度72%(36/50),特异度92.6%(50/54);胎盘植入组流产和剖宫产次数高于非胎盘植入组(P<0.05),合并凶险性前置胎盘的孕妇发生胎盘植入的概率升高;胎盘植入组超声评分高于非胎盘植入组(P<0.05),胎盘内陷窝征和胎盘后间隙消失是胎盘植入的标志性声像图特征;胎盘植入组产时出血量高于非胎盘植入组(P<0.05),胎盘植入组中出现产后出血的概率也是高于非胎盘植入组(P<0.05)。结论 彩色多普勒超声检查在诊断前置胎盘合并胎盘植入中的灵敏度及特异性度均较高,胎盘内陷窝征和胎盘后间隙消失在胎盘植入诊断的检出较高,可作为判断胎盘是否植入的标志性特征。运用超声评分系统可以更加客观地评价胎盘植入的诊断,对于预测其预后有重要的价值,值得推广。

Objective To explore the value of color Doppler ultrasonography in the diagnosis of placenta previa complicated with placenta implantation by analyzing the detection rate of placenta implantation,the typical sonographic characteristics of placenta implantation and the pregnancy outcome of patients.Methods The clinical data and ultrasonic diagnosis data of 100 pregnant women with placenta previa diagnosed by prenatal ultrasound in Guangzhou First People's Hospital from January 2016 to November 2020 were analyzed retrospectively.The sensitivity and specificity of color Doppler in the diagnosis of placenta previa complicated with placenta implantation were analyzed.The age,the number of abortions and cesarean sections and whether there was dangerous placenta previa between the two groups were compared and analyzed.The placental location and placental ultrasound score between the two groups were compared and analyzed,and the characteristics of landmark ultrasound images of placental implantation were analyzed.The delivery complications and outcomes of the two groups were also analyzed.Results The sensitivity and specificity of placenta implantation were 72% (36/50) and 92.6% (50/54).The number of abortion and cesarean section in placenta implantation group was significantly higher than that in non placenta implantation group (P<0.05).The probability of placenta implantation in pregnant women with dangerous placenta previa was significantly higher.The ultrasound score of placenta implantation group was significantly higher than that of non placenta implantation group(P<0.05),intraplacental lacuna sign and disappearance of retroplacental space were the landmark ultrasonographic features of placental implantation.The amount of intrapartum hemorrhage in placenta implantation group was significantly higher than that in non placenta implantation group (P<0.05).The probability of postpartum hemorrhage in placenta implantation group was also significantly higher than that in non placenta implantation group (P<0.05).Conclusions Color Doppler ultrasonography had high sensitivity and specificity in the diagnosis of placenta previa complicated with placenta implantation,intraplacental lacuna sign and disappearance of retroplacental space had high detection rates in the diagnosis of placental implantation,which can be used as a landmark feature to judge whether placenta is implanted or not.The use of ultrasound scoring system can more objectively evaluate the diagnosis of placental implantation,which has important value in predicting its prognosis and is worthy of popularization.