Stamatios Katsimperis^1,*, Lazaros Tzelves¹, Georgios Feretzakis², Themistoklis Bellos¹, Panagiotis Deligiannis¹, Andreas Skolarikos¹, Athanasios Papatsoris¹, Iraklis Mitsogiannis¹

Canadian Journal of Urology, Vol.32, No.4, pp. 271-282, 2025, DOI:10.32604/cju.2025.066395 - 29 August 2025

Abstract Background: Accurate complication reporting in endourology remains challenging, with the Clavien-Dindo Classification and Comprehensive Complication Index being the most commonly used systems. This study aimed to compare surgical outcomes and complication reporting in ureterolithotripsy (URL), percutaneous nephrolithotomy (PCNL), and extracorporeal shock wave lithotripsy (ESWL) using both systems. Methods: This prospective, single-center, non-interventional study included 473 patients undergoing URL, PCNL, or ESWL from October 2022 to October 2024. Demographic, stone-related, and procedural variables were recorded. Complications were classified using the CDC, and cumulative morbidity was assessed using CCI. Statistical analyses, including univariate and multivariate regression, were… More >

Suraj Pursnani, Necole M. Streeper

Canadian Journal of Urology, Vol.31, No.3, pp. 11911-11913, 2024

Abstract Drug-induced nephrolithiasis represents only 1%-2% of stone cases. Here we focus on drugs capable of crystallizing and forming stone, specifically phenazopyridine (Pyridium/Azo). This is a case of a patient who presented with a stone conglomerate in the right proximal ureter and underwent definitive treatment. Interestingly, the stone had a purple hue with FTIR spectroscopy showing stone composition of calcium oxalate (monohydrate and dihydrate) and a material resembling phenazopyridine. We retrospectively learned that she used multiple extended courses of phenazopyridine over 3 months. More >

S. Devi Mahalakshmi^*

Computer Systems Science and Engineering, Vol.44, No.2, pp. 1387-1395, 2023, DOI:10.32604/csse.2023.027610 - 15 June 2022

Abstract The kidney is an important organ of humans to purify the blood. The healthy function of the kidney is always essential to balance the salt, potassium and pH levels in the blood. Recently, the failure of kidneys happens easily to human beings due to their lifestyle, eating habits and diabetes diseases. Early prediction of kidney stones is compulsory for timely treatment. Image processing-based diagnosis approaches provide a greater success rate than other detection approaches. In this work, proposed a kidney stone classification method based on optimized Transfer Learning(TL). The Deep Convolutional Neural Network (DCNN) models More >

Matthew I. Buell^1,*, Akin S. Amasyali^1,*, Natalie Chen², Joshua D. Belle¹, Mohamed Keheila¹, Elizabeth A. Baldwin¹, Cayde Ritchie¹, D. Duane Baldwin¹

Canadian Journal of Urology, Vol.29, No.6, pp. 11371-11377, 2022

Abstract Introduction: During in situ lower pole laser lithotripsy, the dependent location may result in increased challenge fragmenting stones and a risk for stone regrowth if residual fragments remain. The purpose of this study was to compare the thulium fiber laser (TFL) with the holmium laser (HL) for in situ lower pole lithotripsy.
Materials and methods: In a 3D printed kidney benchtop model, sixty 1 cm BegoStones were placed in the lower pole and fragmented in situ until fragments passed through a 2 x 2 mm mesh. Laser lithotripsy was performed using twelve energy, frequency and fiber size… More >

William W. French¹, Joseph M. Kuebker², Xiang Shu³, Christopher M. Sobey⁴, Ryan S. Hsi²

Canadian Journal of Urology, Vol.28, No.1, pp. 10556-10559, 2021

Abstract Non-obstructive, chronic flank pain in urologic patients can be a challenging problem to manage. In this series, we examined the efficacy of celiac plexus blockade in providing pain relief and reducing opiate use in 14 adult urology patients with non-obstructive flank pain for > 1 year. Demographic, clinical, and procedural variables were collected from the medical record for retrospective analysis. Subjective improvement in pain occurred in 11 individuals (79%), and 5 (50%) were able to reduce their daily morphine equivalent dose (MED). Celiac plexus blockade is a viable option for symptomatic relief in urologic patients More >

Rahima Khatun¹, Matthew Galida², Necole M. Streeper²

Canadian Journal of Urology, Vol.28, No.1, pp. 10542-10546, 2021

Abstract Introduction: The opioid epidemic is a growing problem in the United States. There is a high rate of opioid oversupply for treatment of symptomatic nephrolithiasis, partly due to patients being seen by multiple providers. In Pennsylvania, there are efforts to integrate a prescription drug monitoring program (PDMP) within the electronic medical record (EMR). The objectives of this study were to evaluate prescribing practices for opioids for symptomatic nephrolithiasis and the incidence of prescriptions not documented within the EMR.
Materials and methods: Adults who presented for treatment of symptomatic nephrolithiasis were sequentially evaluated from May - October 2017… More >

Survandita Dhawan¹, Ephrem O. Olweny²

Canadian Journal of Urology, Vol.27, No.2, pp. 10162-10166, 2020

Abstract Introduction: Phyllanthus niruri (P. niruri) is the most commonly listed active ingredient in commercially available herbal therapies for kidney stones, despite limited supporting clinical evidence. We performed a meta-analysis to evaluate its efficacy in reducing stone burden. We used Google Trends to analyze its relative popularity in internet searches relative to conventional stone therapies.
Materials and methods: A comprehensive literature search for controlled human studies containing data on the effect of P. niruri treatment on stone size and number was performed. Pooled analysis of change in mean stone size and number with P. niruri was performed using… More >

Kinan Bachour¹, Michael E. Rezaee², Amanda R. Swanton², Vernon M. Pais, Jr.^1,2

Canadian Journal of Urology, Vol.27, No.3, pp. 10238-10243, 2020

Abstract Introduction: To investigate the relationship between socioeconomic factors, specifically insurance status, and kidney stones using a nationally representative cohort.
Materials and methods: A retrospective secondary data analysis of National Health and Nutrition Examination Survey (NHANES) data from 2007 to 2014 was performed. Using univariate statistics and multiple logistic regressions, we examined the relationship between socioeconomic factors and kidney stone history.
Results: The weighted national prevalence of nephrolithiasis between ages 20 and 64 was 7.7% of a population of over 95.3 million. Fifty-three percent of the total population was female. The mean age was 42 years and the mean… More >

Amy M. Reed¹, Eric C. Umbreit², James K. Aden¹, Christopher L. Allam¹

Canadian Journal of Urology, Vol.27, No.4, pp. 10317-10321, 2020

Abstract Introduction: To determine the efficacy and safety of using the semi-rigid ureteroscope as the only ureteral dilator for primary ureteroscopy (URS) in the treatment of renal stones.
Materials and methods: A retrospective review of primary URS for renal stone disease was performed on consecutive patients treated by a single provider from 2013 to 2017. Utilizing wire placement under fluoroscopic guidance and direct visual ureteroscopic dilation with a semi-rigid ureteroscope, primary outcome was successful completion of stone treatment. In addition, perioperative safety was evaluated.
Results: A total of 126 consecutive cases of primary URS using the semi-rigid ureteroscope as… More >

Jordan Allen, Necole M. Streeper

Canadian Journal of Urology, Vol.27, No.6, pp. 10488-10491, 2020

Abstract Obesity is a known risk factor for recurrent nephrolithiasis and it can be challenging to provide safe surgical intervention in the super obese population. Despite high weight limits on surgical beds, these often do not take into account positioning the patient on the end of the bed for dorsal lithotomy, which can risk an unsteady bed. In addition, depending on patient habitus the leg stirrups may not accommodate. There is limited literature that discusses the technical approach for positioning super obese patients in dorsal lithotomy when the weight limit approaches or exceeds the capacity of More >