Yang Xiuzhen,Fu Junfen,Ye Jingjing,et al.Value of contrast-enhanced voiding urosonography in the diagnosis of vesicoureteral reflux and urethrovaginal diseases in children[J].Journal of Clinical Pediatric Surgery,,22():924-929.[doi:10.3760/cma.j.cn101785-202204058-005]
Value of contrast-enhanced voiding urosonography in the diagnosis of vesicoureteral reflux and urethrovaginal diseases in children
- Keywords:
- Vesico-Ureteral Reflux; Diagnosis; Contrast-Enhanced Voiding Urosonography; Intrarenal reflux; Urethra; Vagina; Child
- Abstract:
- Objective To explore the value of contrast-enhanced voiding urosonography (CeVUS) in the diagnosis of vesicoureteral reflux (VUR) and urethrovaginal diseases in children.Methods From September 2020 to December 2021,the relevant clinical data were retrospectively reviewed for 207 children with suspected VUR examined by CeVUS.And CeVUS was performed by SonoVue (Bracco,Italy) and intravesical administration via catheter while urethrovaginal examinations were performed in girls.According to the international VUR grading system,VUR was divided into five grades.Grade of VUR,presence of intrarenal reflux (IRR) and abnormal findings of urethrovaginal tract were recorded,.And the diagnostic value of CeVUS was examined in children with VUR and urethrovaginal abnormalities.Eighteen patients were examined by voiding cystourethrogram (VCUG) during the same period.Weighted Kappa test was utilized for comparing the consistency of CeVUS and VCUG in diagnosis of VUR.Results A total of 416 pyeloureteral units (PUUs) were examined in 207 children,including duplicate kidney (n=3) and unilateral renal absence (n=1).No adverse events related to contrast agent were reported.Among them,97 (97/207,46.86%) were diagnosed with VUR.Among 416 PUUs,145(145/416,34.86%) were diagnosed as VUR.Twenty-four IRR occurred in grade Ⅲ and above.Among 18 children examined by CeVUS and VCUG at the same time (2 duplicate kidneys & 1 unilateral kidney absence,a total of 37 PUUs),Weighted Kappa value of VUR consistency was 0.747 (P<0.01,95%CI:0.554-0.941).Among 37 PUUs,12 PUUs had IRR on CeVUS,one VUR in lower pole of duplex kidney missed a diagnosis by VCUG.Also there were urethrovaginal abnormalities (n=5),Y-shaped ureter (n=1) and miniature kidney at reflux side (n=6).Conclusion CeVUS is safe and has high consistency with VCUG. CeVUS has advantages over VCUG in the diagnosis of IRR and duplicate kidney with VUR. CeVUS can also detect urethrovaginal abnormalities. CeVUS can be used as the preferred imaging method for VUR in children.
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Memo
收稿日期:2023-4-19。
通讯作者:傅君芬,Email:fjf68@zju.edu.cn