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Platelet counts in reactive thrombocytosis rarely exceed 1000 × 109/L. We present the case of a male patient, aged 80 years, with quiescent rheumatoid arthritis who was found to have a platelet count of 1011 × 109/L on routine laboratory testing. The patient was initially asymptomatic but developed leukocytosis to 23.1 × 109/L on hospital day 2. Diagnostic work-up revealed obstructive nephrolithiasis and pyelonephritis, and the thrombocytosis and leukocytosis gradually resolved with empiric antibiotic treatment and ureteral stent placement. Tests for myeloproliferative disorders, including JAK-2V617F mutation, BCR-ABL for chronic myeloid leukemia and acute lymphocytic leukemia, and myeloproliferative neoplasms (MPL/CALR), were negative. Physicians should be aware that in rare cases reactive thrombocytosis can exceed 1000 × 109/L, and that markedly elevated platelet counts in the setting of urinary tract infections may be an early sign of obstructive uropathy.

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Introduction and aims: Retroperitoneal fibrosis (RPF) is a fibroinflammatory disease in which patients may suffer obstructive uropathy (OU). The optimum treatment strategy for RPF with secondary OU is currently unclear, and the aim of this literature review is to assess the methods used to treat this patient cohort. Methods: Medline, Embase, Cinahl, the Cochrane Library and PubMed were systematically searched to find studies assessing treatment outcomes in this patient cohort. After reviewing the studies' titles, abstracts and full texts, 12 were found that matched our search aims. Data from these publications were analysed and reported. Results: The demographic and symptomatic features of patients across the 12 studies were representative of the general RPF population. No randomised control trials (RCTs) were found, and just one study formally compared outcomes between patients who underwent different treatment strategies. Many of the studies concluded that using medical and surgical methods in combination led to positive outcomes; whereas, others found positive outcomes following a variety of regimens. Many studies also highlighted, however, that significant minorities required further treatment after initial therapy. Conclusions regarding optimum treatment methods were limited as most publications did not formally compare outcomes following different strategies and had an observational study design. Conclusion: Although positive outcomes were commonly seen following medical, surgical and a combination of treatments, the literature currently lacks research formally comparing outcomes after assigning specific treatment protocols to groups of RPF patients. More research is therefore required to determine how to best manage RPF leading to secondary OU.

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Obstructive uropathy is defined as the structural or functional interruption of urinary outflow at any level in the urinary tract. It is regarded as one of the most prevalent causes of acute kidney injury (AKI), accounting for 5%-10% of cases. Acute severe obstruction of the urinary tract is a potentially threatening situation for the kidneys and therefore requires prompt identification and management to relieve obstruction. The aim of the present article is to review and synthesize available evidence on obstructive uropathy, providing a clinical guideline for clinicians. A literature review on obstructive uropathy in the context of AKI was performed, focusing on the least clarified aspects regarding diagnosis and management. Recent literature searching was conducted in English and top-level evidence articles including systematic reviews, metanalyses and large series were prioritized. Acute obstruction of the urinary tract is a diagnostic and therapeutical challenge that may lead to important clinical complications together with direct structural and hemodynamic damage to the kidney. Early recognition of the leading cause and its exact location is essential to ensure prompt urinary drainage together with the most suitable drainage technique selection. A multidisciplinary approach, including urologists, nephrologists, and other medical specialties, is best suited to correctly manage concomitant hemodynamic changes, fluid and electrolyte imbalances, and other related issues. Obstructive uropathy is one of the leading causes of AKI. Recognition of patients suitable for early diversion and feasibility or adequate selection of the indicated technique is sometimes challenging. A thorough understanding of the physiopathology behind the development of urinary obstruction is vital for correct diagnosis and management.

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BACKGROUND: Little is known about alpha blocker use in young children, particularly in those with lower urinary tract obstruction (LUTO). Therefore, we aimed to assess the safety and tolerability of selective alpha-blockers in children under 3 years of age with LUTO. METHODS: A prospectively-collected database captured 93 patients born between 12/2005 and 01/2023. Assessed data included baseline characteristics, ultrasound features, blood pressure (BP), side effects and creatinine values. Primary outcome was side effects or discontinuation of alpha-blockers. Secondary outcomes were BP parameters, growth, and kidney function. Data are shown as median with interquartile range (IQR), Odds Ratio (OR) with 95% CI and mean value with standard deviation (SD). RESULTS: A total of 33 patients less than 3 years of age were started on alpha-blockers at 16.8 ± 11.8 months and followed for 48.9 ± 40.5 months. At last follow-up, no significant effect on systolic/diastolic BP percentiles (p > 0.9 and p > 0.9), creatinine levels (p > 0.9). Weight percentiles increased to the last follow-up (37.8 ± 33.2 vs. 53.6 ± 32.9, p = 0.0133) while height percentiles increased from 28 to 100 days to last follow-up (12.9 ± 18.3 vs. 39.6 ± 35.2, p=0.001). Four patients discontinued alpha-blockers; however, no side-effects were reported during the study period. CONCLUSIONS: No severe clinical or systemic side effects were observed, demonstrating safety and tolerability in young children with LUTO. Although alpha-blockers did not significantly improve kidney function in short term follow-up, and failure to thrive was not observed in these children. Additional studies with more patients are required to assess the optimal dosing and timing leading to maximal benefits for these infants.

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Unilateral kidney hypoplasia is a congenital condition characterized by the underdevelopment of one kidney. Although often asymptomatic, it can cause severe renal complications in patients combined with contralateral renal injury, leading to acute renal failure. This case report describes a patient with unilateral kidney hypoplasia who underwent a kidney biopsy on the contralateral normal-sized kidney and subsequently developed oliguric acute kidney injury. This report discusses the challenges encountered while diagnosing and managing this rare case, highlighting the importance of awareness and recognition to perform timely intervention and optimize the patient's outcome.

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OBJECTIVE: To reach a Delphi-generated international expert consensus on the diagnosis, prognostic, management, and core outcome set (COS) of fetal Lower Urinary Tract Obstruction (LUTO). METHODS: A three-round Delphi procedure was conducted among an international panel of LUTO experts. The panel was provided with a list of literature review-generated parameters for the diagnosis, prognostic, management, and outcomes. A parallel procedure was conducted along with patient groups during the development of COS. RESULTS: A total of 160 experts were approached, of whom 99 completed the first round and 80 (80/99, 80.8%) completed all three rounds. In the first trimester, an objective measurement of longitudinal bladder diameter (with ≥7 mm being abnormal) should be used to suspect LUTO. In the second trimester, imaging parameters of LUTO could include: a) an enlarged bladder, b) a keyhole sign, c) bladder wall thickening, d) bilateral hydro (uretero) nephrosis, and e) male sex. There was a lack of consensus on the current prognostic scoring literature. However, experts agreed on the value of amniotic fluid volume (< 24 weeks) to predict survival and that the value of fetal intervention is to improve neonatal survival. While experts endorsed the role of sonographic parameters of renal dysplasia, at least one vesicocentesis, and urine biochemistry for prognosis and counseling, these items did not reach a consensus for determining fetal intervention candidacy. On the other hand, imaging parameters suggestive of LUTO, absence of life-limiting structural or genetic anomalies, gestational age of ≥16 weeks, and oligohydramnios defined as deepest vertical pocket (DVP) <2 cm should be used as candidacy criteria for fetal intervention based on experts' consensus. If a bladder refill was evaluated, it should be assessed subjectively. Vesicoamniotic shunt should be the first line of fetal intervention. In the presence of suspected fetal renal failure, serial amnioinfusion should only be offered as an experimental procedure under research protocols. The core outcome set for future studies was agreed upon. CONCLUSION: International consensus on the diagnosis, prognosis, and management of fetal LUTO, as well as the Core Outcome Set, should inform clinical care and research to optimize perinatal outcomes. This article is protected by copyright. All rights reserved.

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Nephropleural fistula, a rare complication of percutaneous nephrolithotomy (PCNL), occurred in a 45-year-old male with adult autosomal dominant polycystic kidney disease (ADPKD). The patient had undergone right PCNL in 2021 and 2023 and presented to the emergency department with symptoms of fever, breathlessness, and cough lasting one week. Imaging studies, including chest radiograph and contrast-enhanced computed tomography (CECT) of the abdomen and pelvis, revealed gross right pleural effusion, right perinephric abscess, multiple renal cysts, right renal calculi and right ureteric calculi causing severe right hydronephrosis and proximal hydroureter. The imaging also confirmed a nephropleural fistula, with the right kidney's perinephric abscess communicating with the right pleura via the right subhepatic space. Subsequent thoracic ultrasound showed a large effusion of 1500ml with underlying lung collapse. Diagnostic thoracocentesis confirmed empyema, necessitating immediate tube thoracostomy. CT intravenous urography confirmed a non-functioning right kidney. The perinephric abscess was drained with a PCNL tube and meanwhile, pleural fluid and perinephric abscess isolated Klebsiella pneumonia on cultures. The patient received parenteral antibiotics and intravenous fluids and had an intercostal drain and PCNL tube in place for drainage. A right nephrectomy was recommended due to the non-functioning right kidney and the patient is awaiting the procedure.

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Preputial calculus is an infrequent manifestation of urolithiasis, primarily observed in ageing individuals with an uncircumcised penis and not maintaining proper hygiene, which can further be complicated by co-morbidities such as phimosis. On the contrary, phimosis and other neurological/urological malformations have also been reported in children to cause preputial calculus. Overall clinical presentations include a palpable mass within the prepuce, dysuria, hematuria, obstructive uropathy, diminished urine flow, and malodorous discharge. This is a case of a 65-year-old male presented with a complaint of obstructed urinary flow. The patient was diagnosed with obstructive uropathy due to the presence of preputial stone/s. This case illustrates both singular and multiple stones in the affected patient. The patient was managed by surgical intervention by circumcision followed by calculus removal. As per the available published literature, this case can be noted as the first report of the largest preputial stone in an elderly in any rural setup of central India.

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Pedunculated submucosal leiomyomas of the uterus that prolapse into the vagina are common. In extremely rare cases, large pedunculated submucosal leiomyomas may lead to bilateral obstructive uropathy, causing severe renal dysfunction and potentially being misdiagnosed as intracervical leiomyoma. The present study describes the surgical treatment of a patient with a large prolapsed pedunculated submucosal uterine leiomyoma, which was misdiagnosed as an intracervical fibroid. The patient, of menopausal age, presented with uterine bleeding, anemia and severe renal dysfunction. Upon a physical examination, suspicion arose for a cervical leiomyoma, prompting the decision for imaging. Both transvaginal ultrasound and computed tomography, as well as magnetic resonance imaging confirmed the diagnosis of intracervical leiomyoma, accompanied by bilateral obstructive uropathy due to ureteral compression. The surgical management of the patient with laparotomy was decided. Intraoperatively, a large pedunculated submucosal uterine leiomyoma prolapsing into the vagina was identified. Total hysterectomy and bilateral salpingectomy-oophorectomy were performed. The immediate post-operative course was uneventful. At 6 months following surgery, the complete recovery of renal morphology and function was observed. The patient continues to undergo regular follow-up assessment to date. In the present study, a brief literature review is also provided, emphasizing the significant diagnostic and surgical challenges that may arise in the management of patients with large pedunculated submucosal uterine leiomyomas prolapsing into the vagina.

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Distal renal tubular acidosis (dRTA) is a clinical picture of hyperchloremic hypokalemic metabolic acidosis with a normal anion gap. It can be caused by a variety of conditions including obstructive uropathy such as vesicoureteral reflux (VUR). We report a rare case of dRTA secondary to VUR in a 4-year-old girl with a history of meningomyelocele, neurogenic bladder and recurrent urinary tract infections. She was admitted to the hospital with complaints of polydipsia, polyuria, and inability to gain weight for the last 1 year. She was on prophylactic antibiotic treatment with clean intermittent catheterization and anticholinergic drug. She had a history of subureteral injection of various agents and botulin toxin injection into the bladder. Her voiding cystourethrogram revealed grade 5 VUR in the left kidney, tortuosity in the left ureter, and the bladder had a dome-like appearance and was trabeculated. When all laboratory values of the patient since birth were examined, it was observed that urine pH was high despite hypokalemic hyperchloremic metabolic acidosis for the last year; these abnormalities became more severe in the last few months. In conclusion, the development of hypokalemia and nephrolithiasis/nephrocalcinosis along with metabolic acidosis in a patient diagnosed with VUR should be considered as an indicator of impaired tubular functions. Also, the possibility of an underlying VUR in the presence of recurrent urinary tract infection in a patient diagnosed with dRTA should not be ignored.

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Sciatic hernias are unusual, challenging to diagnose, and can present some treatment dilemmas. Sciatic hernias containing the ureter are even less common. Symptoms are variable from renal fossa pain, mild or severe pelvic pain, neuropathic pain, or dysesthesias. Although stenting alone can be a treatment option for this condition, in cases where symptoms or ureteral obstruction relapse after initial treatment, sciatic hernioplasty must be considered as the definitive treatment. This article presents the case of a female patient who presented with a history of nonspecific abdominal pain and was diagnosed with a right-sided ureterosciatic hernia. This was managed with a ureteral stent for reduction of herniated ureteral content, but after recurrence, laparoscopic sciatic hernioplasty was performed. The patient was pain-free and without obstructive uropathy at the one-year follow-up.

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Background: Congenital lower urinary tract obstruction (LUTO) describes a heterogeneous group of congenital malformations. Posterior urethral valves (PUV) represent the most common entity. Familial occurrence has been described, suggestive of underlying genetic factors. LUTO can occur in various degrees of severity. In severe forms, oligohydramnios, pulmonary hypoplasia, and renal damage can occur resulting in high pre- and postnatal mortality. On the contrary, mild forms may become apparent through recurrent urinary tract infections. Such high phenotypic variability has been described even within the same family. Here, we systematically screened parents of affected children for symptoms of LUTO. Methods: The study population consisted of parents of LUTO patients. Fathers over 50 years of age were excluded, to avoid inclusion of male phenocopies due to early prostatic hypertrophy. Uroflowmetry, ultrasonography for residual urine and hydronephrosis, and laboratory examination of standard renal retention parameters were assessed, and a detailed patient history was taken, including the assessment of the International Prostate Symptom Score. Results: Twenty-nine of 42 LUTO families enrolled were found eligible for the present study. Of these, we identified five families in which the father had already been diagnosed with infravesical obstruction (17%). Of the remaining families, nine agreed to participate in our study. Of these nine families, eight families had a child affected with PUV and one family had a child with urethral stenosis. Here, we found two fathers and one mother with symptoms of LUTO suggestive of mild LUTO and one family, in which the unborn male fetal brother of the affected index patient was also diagnosed prenatally with LUTO. Conclusion: Our observations suggest that LUTOs have a higher heritability than previously thought and that first-degree relatives of the affected should be clinically assessed for symptoms of LUTO.

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Background: Cervical cancer remains the most lethal and prevalent cancer among women. Obstructive uropathy is a common complication of advanced cervical cancer, caused by the expanding tumor. One of the recommended treatments for this condition is the implantation of a double J (DJ) stent. However, this procedure is challenging due to the unique characteristics of the patient. The objective of this study was to identify the variables that influence the successful insertion of a DJ stent in women with advanced cervical cancer. Methods: This retrospective study included women who attempted to have a DJ stent implanted at the General Hospital of Adam Malik in Medan, Indonesia, between January 2020 and December 2022, and were diagnosed with advanced cervical cancer. The inclusion criteria were limited to cervical cancer patients in stages III-IV, according to the International Federation of Gynecology and Obstetrics (FIGO) staging standard, who underwent an attempt at DJ stent insertion. Patients who underwent a nephrostomy and received a DJ stent were excluded from the study. The participants were divided into two groups based on the success of the DJ stent implantation. The analysis was conducted using the logistic regression test and the Chi-square test. Results: The study included 88 patients with advanced-stage cervical cancer, of whom 45 underwent nephrostomy and 43 received a DJ stent. The analysis revealed that lower levels of hydronephrosis (odds ratio (OR): 18.203, P = 0.001), urea (OR: 4.207, P = 0.037), and creatinine (OR: 6.923, P = 0.004), higher levels of urine output (OR: 8.26, P = 0.003), and lower cervical cancer stage (OR: 4.125, P = 0.022) were all predictors of successful DJ stent insertion. Conclusion: For women with advanced cervical cancer, lower degrees of hydronephrosis, urea, and creatinine levels, higher urine output, and lower cervical cancer stage were all predictive factors for successful DJ stent implantation.

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OBJECTIVE: To assess the augmented anastomotic ureteral reconstruction using buccal mucosal graft based on omental flap for managing ureteral stricture. SUBJECTS AND METHODS: This prospective cohort study was conducted on 13 patients with ureteric strictures of different lengths secondary to Bilhalziasis, iatrogenic (post endoscopy) and post inflammatory etiology in upper and mid ureteral segments were treated with buccal mucosal patch grafts and The graft is fixed to the undersurface or the posterior surface of the omentum before doing graft anastomosis to the ureteral walls as to ensure the process of graft take sticky to the principles of tissue transfer. All patients were subjected to full history taking, clinical examination for assessment of pain, lower or upper urinary track symptoms and laboratory investigation (complete blood count, CRP, liver function test and kidney function test (serum urea and creatinine). RESULTS: The mean operative time was 148.85 min and mean hospital stay was 3 days. Mean blood loss was ranged from 20 to 210 ml and Stent was removed after 8-12 weeks. The mean follow up was 13 months, all patients had a non-obstructive RI value <0.7 with a non-obstructed drainage pattern on the diuretic renogram except one patient who had severe postoperative UTI necessitating nephrostomy tube insertion his drainage curve was plateau. CONCLUSION: BMG ureteroplasty is a valuable option for a carefully selected patient. The fixation of the graft on the back surface of the omentum allows for better anatomical reconstruction without any twisting to the omental pedicle.

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BACKGROUND: Posterior urethral valves (PUV) is the most common cause of obstructive uropathy in boys; approximately 15% develop kidney failure by early adulthood. However, rates of kidney function decline are poorly defined in PUV children and adults, as is the impact of potentially modifiable chronic kidney disease (CKD) progression risk factors. METHODS: We conducted a retrospective review of all PUV patients followed at our institution from 1995 to 2018. Inclusion criteria were estimated glomerular filtration rate (eGFR) > 20 ml/min/1.73 m2 after 1 year of age, no dialysis or kidney transplant history, and ≥ 2 yearly serum creatinine values after age 1 year. eGFRs were calculated using creatinine-based estimating formulas for children (CKID U25) or adults (CKD-EPI). The primary outcome was annualized change in eGFR, assessed with linear mixed effects models. We also examined the association of acute kidney injury (AKI), proteinuria, hypertension (HTN), and recurrent febrile urinary tract infections (UTIs) with eGFR decline. RESULTS: Fifty-two PUV patients met the inclusion criteria. Median (interquartile range) eGFR decline was 2.6 (2.1, 3.1) ml/min/1.73 m2/year. Children (n = 35) and adults (n = 17) demonstrated progressive decline. Proteinuria and recurrent UTIs were significantly associated with faster progression; AKI and HTN were also associated but did not reach significance. CONCLUSION: PUV patients show progressive loss of kidney function well into adulthood. Proteinuria and recurrent UTIs are associated with faster progression, suggesting potential modifiable risk factors. This is the first study to report annualized eGFR decline rates in PUV patients, which could help inform the design of clinical trials of CKD therapies.

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PURPOSE: Pregnancies complicated by prenatally suspected lower urinary tract obstruction (LUTO) can be associated with high rates of terminations due to potentially poor outcomes. Herein, we assessed autopsy findings of fetuses terminated for suspected LUTO to evaluate the prenatal diagnostic accuracy and spectrum of underlying pathologies. MATERIALS AND METHODS: We performed a retrospective review of all pregnancies referred to a high-risk fetal center in a universal access to care health care system for suspected LUTO that opted for termination of pregnancy between 2009 and 2022. Ultrasound features, genetic investigations, placental findings, and distribution of postmortem diagnoses were assessed. RESULTS: Of a total of 190 pregnancies with suspected LUTO evaluated during the study period, 79 (42%) were terminated. We excluded 35 fetuses with incomplete data, resulting in 44 available for analysis. Pregnancies were terminated at a mean gestation of 22 ± 5 weeks. A LUTO diagnosis was confirmed in 37 (84.1%) fetuses (35 males, 2 females), and the remaining 7 showed other pathologies. Pulmonary hypoplasia was found in 62.2% (n = 23) and placental pathologies in 56.8% of confirmed LUTO compared to 33.4% and 71.4% in non-LUTO cases, respectively. Overall, a total of 31 fetuses underwent additional prenatal investigations with genetic anomalies detected only in fetuses with a confirmed LUTO diagnosis (13.6%). CONCLUSIONS: In our health care system, almost half of prenatally suspected LUTO pregnancies are terminated. The sonographic diagnostic accuracy for LUTO is reasonable at 84%. However, the remaining 16% still had significant pathologies. Genetic abnormalities are uncommon and rarely the trigger for pregnancy terminations.

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This article presents a rare case of cloacal dysgenesis sequence (CDS) detected at 23 weeks of gestation in a 36-year-old woman's first ongoing pregnancy. The fetal ultrasound demonstrated anhydramnios, megacystis, the "keyhole sign" and empty bilateral renal fossae, findings consistent with the fetal obstructive uropathy (FOU). A subsequent postmortem carried out confirmed a diagnosis of a cloacal dysgenesis sequence, characterized by the absence of anal, genital and urinary openings with intact perineum covered by smooth skin and a phallus-like structure.

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Introduction: Urolithiasis is the presence of mineral deposits in the urinary tract. It is rare in under-5 children and in Sub-Saharan Africa. Although metabolic abnormality is implicated in 50% of cases, infection, decreased urine volume and flow (dehydration state) have been implicated. We report a case of bilateral ureteric calculi in an infant with diarrhoea disease and dehydration. Case Report: A.S, is an 8-month-old male with prolonged loose, large-volume stool, large-volume vomiting, high-grade fever, body weakness, and peri-orbital swelling that progressed to generalized body swelling and absent urine for 2 days. He was conscious, afebrile (36.90C), pale with anasarca. Had distended abdomen with ascites. Dyspnea, coarse crepitation, and hypoxemia. Tachycardia (PR -180/min) Hypertensive (BP - 125/79mmHg). PCV - 20%, WBC - 24,000/l, platelet - 110,000/l. Creatinine (1030 umol/l), Urea - 30mmol/l, Multi drug resistant E.Coli. Bilateral Grade II nephritis, hydro-uretero-nephrosis, right pelvi-ureteric and left vesico-ureteric junction calculi. Managed for Diarrhoea disease complicated with Bilateral Obstructive uropathy secondary to Bilateral Ureteric Calculi. Had bilateral open ureteric exploration, ureterolithotomy, Stenting, intraoperative transfusion, antibiotics, analgesics, and IVF. 24-hr post-surgery: urine output (3.26ml/kg/hr): right stent (210ml), left stent (423ml) while urethral catheter (150ml), 742umol/l, Urea: 26mmol/l 48-hr post-surgery: Urine output 5.1ml/kg/hr (1224ml/24hr); Cr: 424umol/l, Urea: 16mmo/l 5 days post-surgery: Urine output 3.1ml/kg/hr (725ml/24hr); Cr: 47umol/l, Urea: 4.6 mmo/l, Patient was discharged home and currently on follow-up in paediatric nephrology and urology clinics. Conclusion: A high index of suspicion of obstructive uropathy in children with diarrhoea disease, and dehydration, who have developed acute kidney injury is recommended.

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Anorectal malformations (ARMs) comprise a broad spectrum of congenital anomalies involving both anorectal and urogenital tracts. After diagnosis, urological problems should be evaluated in addition to surgical correction of ARMs. Commonly encountered urological problems in patients with ARMs are recurrent urinary tract infections, vesicoureteral reflux, and chronic kidney disease. Therefore, the proper timing of urination and appropriate defecation habits are essential for preserving renal function in patients with ARMs. Here, we report a case of acute hydronephrosis by severe stool impaction in a patient with a history of congenital ARMs and neurogenic bladder. In this case, the physicians should consider properly managing chronic constipation and urination in patients with ARMs despite successful surgical corrections.

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Obstructive uropathy, a prevalent clinical problem, can irreparably harm the kidneys if not treated promptly. As a result, accurate diagnosis is necessary for prompt management. This study examines the utility of multidetector computed tomography (MDCT) urography in identifying obstructive uropathy. PubMed, Google, Embase, Medline, and other electronic databases were used to search the English-language literature. The search phrases were obstructive urinary infections or urinary bladder or kidneys or MDCT. The authors' expertise and experience in the subject area aided in archiving pertinent publications. Even though the dilated upper tract of the ureters can be seen, ultrasonography (USG) has limitations because it cannot show the middle portion of the ureters, even if they are dilated mostly due to bowel gas artifacts. The USG does not emphasize the functioning of the renal tract. To evaluate obstructive uropathy, MDCT urography plays a very important role. For speedy, effective therapy, it provides a quick diagnosis of the source of obstruction.