Gregory E. Tasian

ORCID: 0000-0001-7136-1485
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About
Contact & Profiles
Research Areas
  • Kidney Stones and Urolithiasis Treatments
  • Pediatric Urology and Nephrology Studies
  • Urological Disorders and Treatments
  • Ureteral procedures and complications
  • Urinary Tract Infections Management
  • Testicular diseases and treatments
  • Dialysis and Renal Disease Management
  • Pelvic floor disorders treatments
  • Climate Change and Health Impacts
  • Advanced Neural Network Applications
  • Renal and Vascular Pathologies
  • Trauma and Emergency Care Studies
  • Hernia repair and management
  • Porphyrin Metabolism and Disorders
  • Renal function and acid-base balance
  • Renal and related cancers
  • Therapeutic Uses of Natural Elements
  • Appendicitis Diagnosis and Management
  • Sexual Differentiation and Disorders
  • MRI in cancer diagnosis
  • Sperm and Testicular Function
  • Autopsy Techniques and Outcomes
  • Colorectal Cancer Screening and Detection
  • Urinary Bladder and Prostate Research
  • Injury Epidemiology and Prevention

Children's Hospital of Philadelphia
2016-2025

University of Pennsylvania
2016-2025

Philadelphia University
2012-2024

Institute for Medical Informatics and Biostatistics
2022-2024

University of New Mexico
2024

Hospital of the University of Pennsylvania
2023

Center for Clinical Research (United States)
2016

Translational Therapeutics (United States)
2015

New York University
2015

American Urological Association
2014

You have accessJournal of UrologyAUA Guideline1 Aug 2014Evaluation and Treatment Cryptorchidism: AUA Guidelineis companion ofAUA Guideline on the Diagnosis Cryptorchidism Thomas F. Kolon, C.D. Anthony Herndon, Linda A. Baker, Laurence S. Baskin, Cheryl G. Baxter, Earl Y. Cheng, Mireya Diaz, Peter Lee, Carl J. Seashore, Gregory E. Tasian, Julia Barthold KolonThomas Kolon More articles by this author , HerndonC.D. Herndon BakerLinda Baker BaskinLaurence Baskin BaxterCheryl Baxter ChengEarl...

10.1016/j.juro.2014.05.005 article EN The Journal of Urology 2014-05-20

Background and objectives The prevalence of nephrolithiasis in the United States has increased substantially, but recent changes incidence with respect to age, sex, race are not well characterized. This study examined temporal trends annual cumulative risk among children adults living South Carolina over a 16-year period. Design, setting, participants, & measurements We performed population–based, repeated cross–sectional using US Census Medical Encounter data, which capture all emergency...

10.2215/cjn.07610715 article EN Clinical Journal of the American Society of Nephrology 2016-01-15

Abstract Background Kidney ultrasound (US) image segmentation is one of the key steps in computer‐aided diagnosis and treatment planning kidney diseases. Recently, deep learning (DL) technology has demonstrated promising prospects automatic US segmentation. However, due to poor quality, particularly weak boundaries imaging, obtaining accurate annotations for DL‐based methods remain a challenging time‐consuming task. This issue can hinder application data‐hungry methods. Purpose In this...

10.1002/mp.17663 article EN Medical Physics 2025-02-04

Kidney stone disease has become increasingly common during childhood and adolescence. However, the rate of symptomatic kidney recurrence for pediatric patients is uncertain. We sought to determine stones in a cohort children with incident nephrolithiasis.

10.1016/j.juro.2016.07.090 article EN The Journal of Urology 2016-08-11

We determined the relationship between clinical variables and testicular histopathological changes associated with decreased fertility potential in children cryptorchidism.Testis biopsies of 274 who underwent orchiopexy concurrent biopsy 1991 2001 were analyzed for germ Leydig cell loss, fibrosis. Multivariable logistic regression was used to determine if age at (analyzed as continuous ordinal variables), preoperative testis palpability, unilateral vs bilateral disease and/or side...

10.1016/j.juro.2009.04.032 article EN The Journal of Urology 2009-06-18

Background Although intestinal and urinary microbiome perturbations are associated with nephrolithiasis, whether antibiotics a risk factor for this condition remains unknown. Methods We determined the association between 12 classes of oral nephrolithiasis in population-based, case–control study nested within 641 general practices providing electronic health record data >13 million children adults from 1994 to 2015 United Kingdom. used incidence density sampling match 25,981 patients...

10.1681/asn.2017111213 article EN Journal of the American Society of Nephrology 2018-05-10

Background: High ambient temperatures are a risk factor for nephrolithiasis, but the precise relationship between temperature and kidney stone presentation is unknown.Objectives: Our objective was to estimate associations mean daily according lag time temperatures.Methods: Using time-series design distributed nonlinear models, we estimated relative (RR) of associated with temperatures, including cumulative RR 20-day period, individual lags through 20 days. analysis used data from MarketScan...

10.1289/ehp.1307703 article EN public-domain Environmental Health Perspectives 2014-07-10

BACKGROUNDAnimal models of endocrine dysfunction have associated male genital defects with reduced anogenital distance (AGD). Human studies correlated shorter AGD exposure to putative disruptors in the environment but not examined hypospadiac boys. We measured boys hypospadias and those normal genitals.

10.1093/humrep/des087 article EN Human Reproduction 2012-03-20

Little is known about the learning curve of robotic surgery for surgeons in training. We hypothesized that pediatric urology fellows could attain proficiency pyeloplasty, defined as operative time equivalent to an experienced surgeon, within 2-year frame fellowship.From 2006 2010 we performed a prospective cohort study pyeloplasty done by 4 and 1 attending surgeon. recorded times surgical outcomes total 20 consecutive pyeloplasties (80 cases) random sample Multivariate linear regression was...

10.1016/j.juro.2013.02.009 article EN The Journal of Urology 2013-02-11

Significance Statement Although antibiotics have been associated with an increased risk of kidney stones, particularly early in life, perturbations the gut microbiome and metabolome early-onset nephrolithiasis not investigated. Using shotgun metagenomic sequencing untargeted metabolomics stool samples a study 44 children stones controls matched for age, sex, race, authors found that 31 bacterial taxa—including seven butyrate-producing taxa three degrade oxalate—were less abundant among...

10.1681/asn.2019101131 article EN Journal of the American Society of Nephrology 2020-05-07

Approximately 20% of boys with posterior urethral valves develop ESRD; however, few factors associated the risk ESRD have been identified. The objective this study was to determine if renal parenchymal area, defined as area kidney minus pelvicaliceal system on first postnatal ultrasound, is in infants valves.A retrospective cohort who were diagnosed at less than 6 months age between 1988 and 2011 followed for least 1 year a free-standing children's hospital assembled. Cox proportional hazard...

10.2215/cjn.08700813 article EN Clinical Journal of the American Society of Nephrology 2013-12-06

No AccessJournal of UrologyPediatric Urology1 Aug 2014Tamsulosin and Spontaneous Passage Ureteral Stones in Children: A Multi-Institutional Cohort Study Gregory E. Tasian, Nicholas G. Cost, Candace F. Granberg, Jose Pulido, Marcelino Rivera, Zeyad Schwen, Marion Schulte, Janelle A. Fox TasianGregory Tasian Department Surgery, Division Pediatric Urology, Children's Hospital Philadelphia, Pennsylvania Perelman School Medicine, University Pennsylvania, Supported by NIH-T32HD060550. More...

10.1016/j.juro.2014.01.091 article EN The Journal of Urology 2014-02-08

10.1007/s40746-016-0039-7 article EN Current Treatment Options in Pediatrics 2016-01-25
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