Evidence map›Paper›PMID 42635673›Full record

Observational studyPediatric surgery international2026

Pyeloplasty outcomes in children with complex anatomy: an observational series of reconstruction in concurrent ureterovesical obstruction, duplex, malrotated or ectopic moieties and horseshoe kidneys.

Eviatar Fields, Ali Hamade, Adree Khondker, Allie Wynn, Ihtisham Ahmad, Samer Maher, Jin Kyu Kim, Michael Chua, Mandy Rickard, Armando J Lorenzo

Abstract readObservational Study
PubMed Publisher
In one paragraph

Observational study in Pediatric surgery international, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Eviatar Fields *Faculty of Medicine, McGill University, Montreal, QC, Canada.
Ali Hamade *Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.
Adree KhondkerDivision of Urology, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada.
Allie WynnDivision of Urology, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada.
Ihtisham AhmadTemerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Samer MaherTemerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Jin Kyu KimDivision of Urology, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada.
Michael ChuaDivision of Urology, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada.
Mandy RickardDivision of Urology, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada.
Armando J LorenzoDivision of Urology, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada. armando.lorenzo@sickkids.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeUreteropelvic junction obstruction (UPJO) with concurrent renal anomalies can introduce surgical complexity, increasing the risk of surgical complications and redo pyeloplasty. We sought to determine whether anatomic complexity is associated with higher morbidity.

methodsWe retrospectively identified 59 children with UPJO and a concurrent complex congenital renal anomaly (CCRA) at our institution between 2008 and 2023, and matched them with 177 non-complex controls. CCRAs included ectopic, duplex, malrotated and horseshoe kidneys and concurrent UPJ + UVJ obstruction. Data were abstracted regarding patient demographics, perioperative variables, and pre- and post-operative imaging findings. The primary outcomes were emergency department visits and surgical complications, including recurrent obstruction.

resultsBaseline characteristics did not differ between CCRA patients and controls. CCRA patients had a longer median procedure time (159 vs. 135 min., p = 0.01). No differences were found in primary outcomes, including reoperation (control: 6.8% vs. CCRA: 5.1%, p = 0.77) and emergency department visit rate (15.8% vs. 27.1%, p = 0.05). Hydronephrosis severity based on percent improvement on ultrasound was similar between groups.

conclusionDespite an increased technical burden, a concurrent renal anomaly does not increase the rate of redo pyeloplasty compared with the classically accepted failure rate. Pyeloplasty in patients with CCRAs is thus feasible, and careful attention is required during follow-up imaging.

Indexed as

Fused KidneyKidneyKidney PelvisPlastic Surgery ProceduresUreteral ObstructionUrologic Surgical ProceduresChildChild, PreschoolFemaleHumansInfantMalePostoperative ComplicationsRetrospective StudiesTreatment OutcomeCongenital anomalies of the kidney and urinary tract (CAKUT)Prenatal hydronephrosisPyeloplastyUreteropelvic junction obstruction

Identifiers

PMID42635673

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.