ArticleInternational braz j urol : official journal of the Brazilian Society of Urology
Isolated low grade prenatally detected unilateral hydronephrosis: do we need long term follow-up?
Article in International braz j urol : official journal of the Brazilian Society of Urology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 10 citations in OpenAlex.
- Risk factors for surgery in children with ureteropelvic junction obstruction due to antenatally detected ınfantil hydronephrosis.Clinical and experimental nephrology · 2025Article
- Antenatally detected urinary tract dilatation: a pediatric nephrologist's point of view.Childhood kidney diseases · 2024Review
- Antenatally detected urinary tract dilatation: long-term outcome.Pediatric nephrology (Berlin, Germany) · 2023Review
- Clinical characteristics of patients with prenatal hydronephrosis in early postnatal period: a single center retrospective study.BMC pediatrics · 2023Article
- Antenatally detected urinary tract dilatation: a 12-15-year follow-up.Pediatric nephrology (Berlin, Germany) · 2020Article
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5 authors at 1 institution in 2 countries.
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Abstract
purposeTo assess the need for postnatal evaluation and the medium term outcome in patients with isolated unilateral low grade prenatally detected hydronephrosis. MATERIALS AND
methodsWe prospectively selected 424 patients (690 kidney units) with a prenatal diagnosis of urinary tract dilatation between 2010 and 2013. We included only those patients with isolated unilateral low-grade hydronephrosis who underwent at least 2 postnatal ultrasound examinations. The Society for Fetal Urology (SFU) grading system was utilized for assessment of the hydronephrosis. We excluded patients with bilateral dilation or other urological abnormalities. The fate of hydronephrosis including resolution, stability or worsening was documented.
resultsA total of 66 infants (44 boys and 22 girls) with antenatally diagnosed unilateral urinary tract dilation (23 right and 43 left) were identified. Ultrasounds showed SFU grade 1 hydronephrosis in 32 patients (48%) and SFU grade 2 hydronephrosis in 34 (52%). After a mean follow-up period of 32 months (range 12 to 60), 37 patients (56%) had complete resolution of hydronephrosis while the remaining 29 were stable (44%). None of our patients developed UTIs during follow-up and none required surgical intervention.
conclusionsPrenatally detected, isolated unilateral low-grade hydronephrosis usually have a favorable prognosis. All cases in our cohort showed either stability or resolution of hydronephrosis without any harmful consequences. Based on our findings on medium-term in this category of patients, long-term follow-up is not warranted.
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