Background and Objectives: Duodenal atresia and stenosis are common causes of intestinal obstruction. Associated anomalies significantly influence early postoperative mortality, while postoperative complications impact long-term survival. Materials and Methods: Over a 13-year period from January 2010 to August 2023, a total of 74 infants and children with congenital duodenal obstruction were treated at “Grigore Alexandrescu” Children’s Emergency Hospital and met the inclusion criteria. All patients diagnosed with duodenal obstruction (both instrinsic and extrinsic causes) were included. Analysed data included congenital anomalies, Apgar scores, birth weights, surgical techniques, and complications. Results: The associated anomalies included cardiac (n = 33), Down syndrome (n = 13), neurological (n = 11), pulmonary (n = 7), renal (n = 4), skeletal (n = 1), and gastrointestinal and hepatobiliopancreatic anomalies (n = 25). In total, 12 patients experienced perioperative ventilation problems. Early postoperative complications (within 30 days) occurred in 21 patients, while 6 had late postoperative complications (after 30 days). Among non-surgical complications, we noted ventilation problems, sepsis (n = 7), and pneumothorax (n = 1). Surgical complications included adhesive bowel obstruction (n = 7), incisional hernia (n = 3), peritonitis (n = 3), dysfunctional duodenoduodenostomy or duodenojejunostomy (n = 3), pneumoperitoneum (n = 5), enteric fistula (n = 3), and volvulus (n = 4). Conclusions: Surprisingly, this retrospective study revealed that an Apgar score below 8, along with neurological and pulmonary abnormalities, is associated with postoperative complications. Conversely, other congenital anomalies, low birth weight, and age at admission do not serve as prognostic factors.

Background: Recurrent urinary tract infections (rUTIs) in children are increasingly complicated by antimicrobial resistance, leading to limited treatment options and challenging prophylactic management. Continuous local monitoring of resistance trends is essential for evidence-based stewardship. Methods: This retrospective study analysed recurrent paediatric UTI recorded between 2020 and 2024 at a tertiary hospital in Romania. Data were extracted using the ICD-10 code N39.0 and included demographic, clinical, and microbiological variables. Antimicrobial susceptibility testing followed CLSI standards. Associations between multidrug resistance (MDR) and clinical factors were assessed with χ² tests and Cramer’s V, and predictors of MDR were evaluated by multivariable logistic regression. Temporal trends in resistance were examined using logistic regression with year as a continuous variable, and results were validated with the non-parametric Cochran–Armitage linear-by-linear χ² trend test to strengthen analytical rigour. Proportions are presented with Wilson 95% confidence intervals (CIs). Results: A total of 134 children met inclusion criteria for rUTI, of whom 130 had complete demographic and microbiological data and were included in analyses. Each episode represented a distinct culture-confirmed infection occurring ≥30 days apart. MDR occurred in 48.5% of isolates (95% CI, 40.2–56.9) and ESBL in 20.9% (95% CI, 14.9–28.5). MDR was significantly associated with urinary tract malformations (χ² = 5.78, p = 0.016) and continuous antibiotic prophylaxis (χ² = 4.23, p = 0.040). Neither logistic nor Cochran–Armitage trend analyses demonstrated a significant temporal increase in MDR (OR per year = 0.94; 95% CI 0.75–1.17; p = 0.566; χ² = 0.89; p = 0.346). Conclusions: MDR and ESBL rates among children with recurrent UTIs remain high but stable. The combined use of parametric and non-parametric trend analyses confirmed the absence of a significant upward trajectory, underscoring the need for ongoing surveillance and stewardship to maintain antibiotic effectiveness in paediatric care.

Background: Ipsilateral concomitant ureteropelvic junction (UPJ) and ureterovesical junction (UVJ) obstruction is an uncommon but clinically important pediatric condition. Because standard imaging often detects only one level of obstruction, the coexistence of both lesions is frequently overlooked. Delayed diagnosis may result in persistent hydronephrosis, recurrent urinary tract infections, and progressive renal injury. This systematic review synthesizes current evidence regarding diagnostic challenges, management strategies, and outcomes in children with dual UPJ–UVJ obstruction. Methods: A systematic review following PRISMA 2020 guidelines was conducted and prospectively registered in PROSPERO. Major databases were searched for studies describing pediatric patients with confirmed ipsilateral UPJ + UVJ obstruction. Extracted data included clinical presentation, diagnostic pathways, imaging modalities, timing of diagnosis, surgical sequencing, and postoperative outcomes. Results: Across the 8 included studies, preoperative recognition of dual obstruction was uncommon. Most cases were diagnosed intraoperatively when retrograde stent passage failed or postoperatively when hydronephrosis persisted after an apparently adequate first procedure. Retrograde or antegrade pyelography consistently outperformed ultrasonography and diuretic renography in identifying distal pathology. Staged repair—typically beginning with pyeloplasty—emerged as the most reliable approach, as correction of the proximal obstruction alone frequently improved distal drainage. UVJ-first strategies were less effective and often required secondary pyeloplasty. Endoscopic and minimally invasive techniques showed promise in selected patients but were reported in limited numbers with short follow-up. Functional renal outcomes generally stabilized or improved following complete correction, particularly when intervention occurred early in life. Conclusions: Dual UPJ–UVJ obstruction remains a diagnostic challenge in pediatric urology. Complementing standard imaging with contrast pyelography and maintaining vigilance during intraoperative stent placement can improve detection. Available reports suggest that a staged proximal-first surgical strategy can optimize drainage and reduce the risk of unnecessary distal reconstruction. Early intervention appears beneficial for renal recovery, though long-term outcomes remain insufficiently studied. Ongoing follow-up is essential, particularly in children with recurrent urinary tract infections or persistent hydronephrosis.

Background: Continuous antibiotic prophylaxis (CAP) is widely used in infants with vesicoureteral reflux (VUR) to prevent recurrent urinary tract infections and renal scarring. However, this practice entails prolonged low-dose antibiotic exposure during a critical period of microbiome establishment, potentially influencing long-term microbial and immune development. Methods: A systematic review was conducted according to PRISMA 2020 guidelines. PubMed, Embase, Scopus, Web of Science, and the Cochrane Library were searched up to September 2025 for studies evaluating gut or urinary microbiome changes in children receiving CAP for VUR. Eligible studies included human participants under 18 years with microbiome outcomes assessed by sequencing or culture-based methods. Results: Twenty-one records were identified, and four studies met inclusion criteria—three observational microbiome studies and one randomized controlled trial. CAP preserved overall microbial alpha diversity but induced compositional changes, notably enrichment of Enterobacteriaceae and reduction in Bifidobacteriaceae. The included RCT confirmed reduced UTI recurrence but increased antimicrobial resistance and non–E. coli infections. Conclusions: CAP in early life maintains microbial diversity but alters microbiota composition and resistance profiles. Identifying these shifts may support individualized prophylaxis strategies and microbiome-preserving interventions to balance infection prevention with ecological safety in infancy.

Background: Recurrent urinary tract infections (rUTIs) in children are increasingly complicated by antimicrobial resistance, leading to limited treatment options and chal-lenging prophylactic management. Continuous local monitoring of resistance trends is essential for evidence-based stewardship. Methods: This retrospective study analysed 130 episodes of recurrent paediatric UTI recorded between 2020 and 2024 at a tertiary hospital in Romania. Data were extracted using the ICD-10 code N39.0 and included demographic, clinical, and microbiological variables. Antimicrobial susceptibility testing followed CLSI standards. Associations between multidrug resistance (MDR) and clinical factors were assessed with χ² tests and Cramer’s V, and predictors of MDR were evaluated by multivariable logistic regression. Temporal trends in resistance were examined using logistic regression with year as a continuous variable, and results were validated with the non-parametric Cochran–Armitage linear-by-linear χ² trend test to strengthen analytical rigor. Proportions are presented with Wilson 95% confidence intervals (CIs). Results: MDR occurred in 48.5% of isolates (95% CI, 40.2–56.9) and ESBL in 20.9% (95% CI, 14.9–28.5). MDR was significantly associated with urinary tract malformations (χ² = 5.78, p = 0.016) and continuous antibiotic prophylaxis (χ² = 4.23, p = 0.040). Neither logistic nor Cochran–Armitage trend analyses demonstrated a significant temporal increase in MDR (OR per year = 0.94; 95% CI 0.75–1.17; p = 0.566; χ² = 0.89; p = 0.346). Conclusions: MDR and ESBL rates among children with recurrent UTIs remain high but stable. The combined use of parametric and non-parametric trend analyses confirmed the absence of a significant upward trajectory, underscoring the need for ongoing surveillance and stewardship to maintain antibiotic effectiveness in paediatric care.

Background: Severe lower urinary tract dysfunction (LUTD) in neurologically and anatomically normal children is uncommon and frequently underdiagnosed. Its clinical presentation may closely mimic obstructive or reflux pathology, creating a significant diagnostic pitfall and exposing patients to unnecessary invasive procedures or surgery, with potential risk to the upper urinary tract. Methods: We conducted a descriptive case series of three pediatric patients evaluated at a tertiary pediatric urology center, complemented by a focused narrative review of the literature on severe non-neurogenic LUTD and Hinman syndrome. Clinical data included imaging, cystoscopy, urodynamic evaluation, management strategies, and medium-term follow-up. Results: The three patients (aged 3–10 years) presented with recurrent febrile urinary tract infections, incontinence, or acute urinary retention. Distinct severe functional urodynamic phenotypes were identified: detrusor overactivity with reduced bladder capacity; poor compliance with detrusor–sphincter dyssynergia and secondary high-grade vesicoureteral reflux (Hinman syndrome); and detrusor underactivity with significant post-void residuals. Despite normal neuroanatomy, all patients illustrated marked bladder wall remodeling on cystoscopy, including trabeculation and pseudopolypoid changes. Multimodal conservative management—combining urotherapy, pelvic floor biofeedback, targeted pharmacologic therapy, and, when indicated, continuous antibiotic prophylaxis or clean intermittent catheterization—resulted in resolution of recurrent infections and meaningful improvement in bladder function during medium-term follow-up, although symptom recurrence occurred in one patient after treatment withdrawal. Conclusions: These cases highlight the heterogeneity and potential reversibility of severe functional LUTD within the non-neurogenic voiding disorder spectrum. Early functional recognition based on urodynamic phenotyping is essential to avoid misdiagnosis, prevent unnecessary surgical intervention, and protect renal function. Conservative, function-oriented management remains the cornerstone of effective treatment in this population.