Comparative evaluation of flexible ureterorenoscopy and mini-percutaneous nephrolithotomy for the management of renal pelvic stones less than 2 cm with high attenuation value in pediatric patients: a prospective randomized study.

Ossama Mahmoud, Mahmoud Abdallah, Ahmed Abdellatif, Ahmed Hamdy Mostafa, Anas Albudairat, Akram A Elmarakbi, Hany F Badawy

Abstract readRandomized Controlled TrialComparative Study

PubMed Full text at PMC Publisher

In one paragraph

Trial report in Urolithiasis, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it

0cells of the map it votes in

3citing papers in PubMed

–field-weighted citation impact

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

3 citing papers in PubMed.

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

7 authors.

Ossama MahmoudUrology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt. osama.mahmoud@med.bsu.edu.eg.

Mahmoud AbdallahUrology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt. mahmoud.abdalla@med.bsu.edu.eg.ORCID http://orcid.org/0009-0004-7490-4288

Ahmed AbdellatifUrology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt.

Ahmed Hamdy MostafaUrology Department, Alexandria Police Hospital, Alexandria, Egypt.

Anas AlbudairatUrology Department, Alkhor Hospital, Hamad Medical Corporation, Qatar, Egypt.

Akram A ElmarakbiUrology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt.

Hany F BadawyUrology Department, Faculty of Medicine, Beni-Suef University, Beni-Suef, Egypt.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This study aimed to evaluate the effectiveness and safety of retrograde intrarenal surgery (RIRS) compared with mini-percutaneous nephrolithotomy (mini-PCNL) in children with renal pelvic stones < 2 cm and density > 1000 HU. A prospective randomized clinical trial was conducted at Beni-Suef University Hospitals including 70 children aged 3–14 years. Eligible participants had a single renal pelvic stone < 2 cm with density > 1000 HU on low-dose non-contrast CT and were randomized equally to undergo RIRS or mini-PCNL (n = 35 each). The stone-free rates at one month were 91.4% for RIRS and 94.3% for mini-PCNL (p = 0.643). RIRS was associated with shorter operative time (72.7 vs. 80.5 min), reduced hospital stay (1.1 vs. 1.3 days), shorter catheterization (1.2 vs. 2.1 days), and lower radiation exposure (34.6 vs. 115.1 s) (all p < 0.05). Hemoglobin drop was minimal and not significant in RIRS (0.01 g/dL; p = 0.097) and greater in mini-PCNL (0.74 g/dL; p < 0.001). Complication rates were similar (11.4% vs. 17.1%; p = 0.550). Both RIRS and mini-PCNL are effective and safe for managing pediatric renal stones < 2 cm with high density. RIRS offers comparable efficacy with less invasiveness, shorter recovery, and lower radiation exposure. Mini-PCNL remains a valuable option in anatomically complex or lower-calyceal cases.

Indexed as

Kidney CalculiKidney PelvisNephrolithotomy, PercutaneousPostoperative ComplicationsUreteroscopyAdolescentChildChild, PreschoolFemaleHumansLength of StayMaleOperative TimeProspective StudiesTomography, X-Ray ComputedTreatment OutcomeMini-percutaneous nephrolithotomyPediatric renal stonesPerioperative outcomesRetrograde intrarenal surgeryStone-free rate

Identifiers

PMID41632280

DOI10.1007/s00240-026-01938-x

PMCPMC12868023

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