The value of the ultrasound score to indicate pyloplasty in unilateral hydronephrosis: a retrospective study with 120 Brazilian children
Resumo
Abstract: Introduction: Scintigraphy has long been the gold standard for indicating pyeloplasty for UPJO. The Pyeloplasty Prediction Score (PPS) was introduced as an alternative tool to indicate pyeloplasty. Ultrasound is widely available, painless, noninvasive, does not require radiation, and is a low-cost examination. This study evaluates the correspondence between PPS and patients who underwent pyeloplasty. Method: This was a retrospective study involving 120 patients who underwent pyeloplasty. After data collection, the researchers applied the PPS. Results & Discussion: The left kidney was the most commonly affected (68.3%), mainly in boys (67.5%), and 49.2% received an antenatal diagnosis. Intrinsic obstruction was found in 89.7% of the patients. Approximately 69.17% (n=83) had a preoperative PPS grater/equal 8. The affected kidney had a larger longitudinal measure than the contralateral. There was no difference related to sex, laterality, or etiology. The use of the ultrasound score would be sufficient for almost 70% of patients to indicate pyeloplasty without any other complementary exams. Conclusions: Based on this study, it is not possible to state that the PPS, without kidney scintigraphy, is effective in indicating pyeloplasty for every patient. However, it could be an excellent screening method.
Keywords: Hydronephrosis. Ultrasonography. Ureteral obstruction. Urogenital abnormalities. Pediatrics.
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