甚高频超声特征对皮肤混合瘤的诊断价值

Diagnostic value of very high frequency ultrasound characteristics for mixed tumor of the skin

目的分析皮肤混合瘤(mixed tumor of the skin,MTS)的甚高频超声特征,探讨甚高频超声特征对MTS的诊断价值。方法选取2019年1月至2024年3月于杭州市第三人民医院皮肤科手术并经病理证实为MTS的63例患者为观察组,与同期其他皮肤良性肿瘤63例患者作为对照组,回顾性分析并总结MTS的甚高频超声特征,评价甚高频超声特征对MTS的诊断效能。结果两组患者的肿瘤长径、横径、纵横比,是否伴钙化,有无囊性,血流分级,阻力指数比较,差异无统计学意义(P>0.05)。MTS有更明显的假包膜,且大部分内部回声欠均匀,后方伴增强效应,血流以边缘血流为主,两组比较,差异有统计学意义(P<0.05),受试者操作特征曲线结果显示绘制假包膜、内部回声欠均匀、边缘血流为主及后方增强效应4者联合的诊断效能最高,曲线下面积为0.772,敏感度为77.8%,特异性为71.4%。结论MTS具有特定的甚高频超声特征,甚高频超声可对MTS临床诊断提供帮助。

Objective To analyze the very high frequency(VHF)ultrasound features of mixed tumor of the skin(MTS),and to explore the diagnostic value of VHF ultrasound features for MTS.Methods A total of 63 cases of MTS confirmed by surgery and pathology in the Department of Dermatology of Hangzhou Third People’s Hospital from January 2019 to March 2024 were selected as observation group,and 63 other benign skin tumors in the same period were used as control group.The VHF ultrasound features of MTS were retrospectively analyzed and summarized,and the diagnostic efficiency of VHF ultrasound features for MTS was evaluated.Results Compared with other benign skin tumors,there were no significant differences in the length diameter,transverse diameter,aspect ratio,presence or absence of calcification,cystic disease,blood flow grade and resistance index between two groups(P>0.05).However,MTS had a more obvious pseudo-capsule,and most of the internal echoes were not uniform,and the posterior side was accompanied by a enhancing effect,and the blood flow was dominated by marginal blood flow,and the difference between two groups was obvious(P<0.05).The receiver operating characteristic curve showed that the combination of pseudo capsule,internal echo,marginal flow and peripheral enhancement had the highest diagnostic efficacy,with an area under the curve of 0.772,a sensitivity of 77.8%,and a specificity of 71.4%.Conclusion MTS have specific VHF ultrasound features,which can provide more assistance in the clinical diagnosis of MTS.