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Title: Can distal ureteral diameter measurement predict primary vesicoureteral reflux clinical outcome and success of endoscopic injection? Author: Payza AD, Hoşgör M, Serdaroğlu E, Sencan A. Journal: J Pediatr Urol; 2019 Oct; 15(5):515.e1-515.e8. PubMed ID: 31420285. Abstract: OBJECTIVE: The objective of the study was to evaluate the predictive value of distal ureteral diameter ratio (UDR) on outcome of primary vesicoureteral reflux (VUR) and reflux resolution after endoscopic injection. PATIENTS AND METHODS: Three hundred eighty-three patients treated for primary VUR between January 2010 and October 2015 were retrospectively reviewed. The parameters analyzed were age at diagnosis, sex, grade and lateralite of VUR, complaints at admission (febrile urinary tract infection, antenatal hydronephrosis, family history),bladder-bowel dysfunction (urgency, incontinence, constipation), dimercaptosuccinic acid (DMSA) scintigraphy findings, follow-up period, clinical course (spontaneous resolution or surgical correction), time of spontaneous resolution, surgical treatment time and age, materials used for injection and success of endoscopic injection. Ureteral diameter ratio was calculated on the initial VCUG at the time of the diagnosis as the largest ureteral diameter within the false pelvis divided by the distance between L1-L3.The correlation between UDR, clinical outcome (spontaneous resolution/surgical correction) and success of endoscopic injection was evaluated by logistic regression analysis. To compare the effect of UDR and grade of reflux on spontaneous resolution, multivariate logistic regression analysis was performed in three models together with sex, age, resolution time, presence of febrile UTI and DMSA scan findings. RESULTS: Three hundred eighty-three patients were enrolled. There was a strong correlation between UDR and grade of reflux (p < 0,0001). Ureteral diameter ratio was higher in patients whose complaints at admission were family history and febrile UTI, but this correlation was not statistically significant (p > 0.05). When the correlation between UDR and the DMSA scan findings was evaluated, UDR was found to be significantly higher in patients with moderate and severe scarring. Bladder-bowel dysfunction was present in 111 patients (28.9%). There was no significant correlation between BBD and UDR (p > 0.05). 62 patients showed spontaneous resolution in a median duration of 1.55 years. The predictive value of UDR for spontaneous resolution was more significant than grade (p < 0.001).There was no spontaneous resolution in patients with UDR over 0.45.321 patients underwent operation (248 endoscopic injection, 17 ureteroneocystostomy, 56 endoscopic injection+ureteroneocystostomy). When the predictive value of the reflux grade and UDR in the success rate of endoscopic correction was compared, UDR was shown to be significantly more predictive than the grade of reflux (p < 0.05). Ureteral diameter ratio was significantly higher in patients whose injection treatment was unsuccessful. Each 0.05 unit increase in UDR affected the success of endoscopic injection negatively (95% CI:<0.001-0.071). CONCLUSION: Ureteral diameter ratio is an objective measurement of VUR and appears to be a new predictive tool for clinical outcome and success after endoscopic injection.[Abstract] [Full Text] [Related] [New Search]