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Does the distal ureteral diameter ratio (UDR) matter in the surgical management of vesicoureteral reflux in children?
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Does the distal ureteral diameter ratio (UDR) matter in the surgical management of vesicoureteral reflux in children?
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Journal Article
Does the distal ureteral diameter ratio (UDR) matter in the surgical management of vesicoureteral reflux in children?
2023
Overview
Purpose
To evaluate UDR reliability, sensitivity, specificity and to identify the best treatment basing on UDR among single or double endoscopic injections and ureteral reimplantation.
Methods
Data of patients affected by primary VUR and treated by endoscopic injection over a 10 years period were retrospectively analyzed. Two radiologist attributed reflux grade and UDR on voiding cystourethrogram twice and blinded. Follow-up focused on resolution after 1 or 2 endoscopic injections. Relation between UDR, reflux grade and outcomes were analyzed.
Results
Patient enrolled were 198. Low grade VUR was present in 24.8%, grade 3 in 41.6%, grade 4–5 in 33.6%. Resolution after one injection was obtained in 88 patients; among 110 not resolved 104 cases had a second injection. Success after 2 injections was reported in 138 cases. UDR showed a higher reliability compared with reflux grade both in intra than inter-reader measurement (ICC > 90%). Success after 1 or 2 injections was reported for UDR < 0.33 and UDR < 0.47 respectively.
Conclusion
UDR shows to be a more reliable measurement that allows for an objective estimation of VUR severity and prognosis. It represents a quantitative parameter that might be useful to identify patients who may benefit endoscopic or surgical treatment, avoiding unnecessary under or over-treatment.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
