Research Overview

Caleb P. Nelson, MD, MPH, is a pediatric urologist and a clinical and health services researcher. His research seeks both to improve the evidence base in pediatric urology, and to investigate problems in health services delivery including over- and under-use, unwarranted variation, and patient safety. He has been involved in significant clinical studies both locally and nationally, and also has a large experience with use of administrative databases to evaluate trends and practice patterns in urological care. His particular clinical areas of research interest include vesicoureteral reflux (VUR), kidney stones, hydronephrosis, and medical imaging.

Dr. Nelson is a site PI for the NIH-funded RIVUR study, a large multicenter randomized controlled trial of antibiotic prophylaxis in children with VUR. He also has a K23 career development award from the NIH (NIDDK) for the study of clinical outcomes among siblings of children with VUR. He is also conducting research on pediatric kidney stones, seeking to evaluate factors that cause stones, and improve the safety and quality of treatment of kidney stone in children.

About Caleb Nelson MD, MPH

Dr. Nelson attended Dartmouth College and received his MD degree from Duke University. He completed a urology residency at the University of Michigan in Ann Arbor, where he also received an MPH in epidemiology and completed an NIH-funded Clinical Research Training Fellowship. He then completed a pediatric urology fellowship at the Johns Hopkins Hospital in Baltimore, MD. He has been a member of the faculty of Harvard Medical School, and an attending surgeon at Boston Children’s Hospital, since 2006. He is an assistant editor for the section of population and health services research for the Journal of Pediatric Urology. He is a member of the Society for Pediatric Urology, the American Urological Association, and the Society of Fetal Urology.

Active Projects

2010-2015 Clinical Outcomes and Decision-Making for Siblings of Children with Vesico-Ureteral Reflux

NIDDK 1K23DK088943-01
Principal Investigator

K23 Career Development Award. This research project seeks learn more about the best way to manage vesicoureteral reflux (backwards flow of urine from the bladder up to the kidneys) among siblings of children with vesicoureteral reflux (VUR). Although some people advocate testing these siblings for VUR even if they seem healthy, such “screening” would subject large numbers of asymptomatic children to invasive tests with potentially adverse effects, long-term follow-up, prolonged antibiotic use, and possible surgery. Therefore, it is important that we learn more about VUR in these siblings in order to decide whether such screening is indicated.

Researcher Services

Researcher Areas

  • Vesicoureteral reflux
  • Kidney Stones
  • Hydronephrosis
  • Medical imaging

Research Departments

PUBLICATIONS

Publications powered by Harvard Catalyst Profiles

  1. Varda BK, Wang Y, Chung BI, Lee RS, Kurtz MP, Nelson CP, Chang SL. Has the robot caught up? National trends in utilization, perioperative outcomes, and cost for open, laparoscopic, and robotic pediatric pyeloplasty in the United States from 2003 to 2015. J Pediatr Urol. 2018 Feb 22. View abstract
  2. Nelson CP. Editorial Comment. J Urol. 2017 Dec 13. View abstract
  3. Varda BK, Logvinenko T, Bauer S, Cilento B, Yu RN, Nelson CP. Minor procedure, major impact: Patient-reported outcomes following urethral meatotomy. J Pediatr Urol. 2017 Nov 17. View abstract
  4. Daga A, Majmundar AJ, Braun DA, Gee HY, Lawson JA, Shril S, Jobst-Schwan T, Vivante A, Schapiro D, Tan W, Warejko JK, Widmeier E, Nelson CP, Fathy HM, Gucev Z, Soliman NA, Hashmi S, Halbritter J, Halty M, Kari JA, El-Desoky S, Ferguson MA, Somers MJG, Traum AZ, Stein DR, Daouk GH, Rodig NM, Katz A, Hanna C, Schwaderer AL, Sayer JA, Wassner AJ, Mane S, Lifton RP, Milosevic D, Tasic V, Baum MA, Hildebrandt F. Whole exome sequencing frequently detects a monogenic cause in early onset nephrolithiasis and nephrocalcinosis. Kidney Int. 2018 Jan; 93(1):204-213. View abstract
  5. Diamond DA, Chan IHY, Holland AJA, Kurtz MP, Nelson C, Estrada CR, Bauer S, Tam PKH. Advances in paediatric urology. Lancet. 2017 Sep 09; 390(10099):1061-1071. View abstract
  6. McQuaid JW, Kurtz MP, Logvinenko T, Nelson CP. Bladder debris on renal and bladder ultrasound: A significant predictor of positive urine culture. J Pediatr Urol. 2017 Aug; 13(4):385.e1-385.e5. View abstract
  7. Nelson CP. Population and health services. J Pediatr Urol. 2017 06; 13(3):280. View abstract
  8. Kurtz MP, Nelson CP. Urology mythbusters: The 5:1 ratio in ureteral reimplantation. J Pediatr Urol. 2017 04; 13(2):187-188. View abstract
  9. Kurtz MP, Nelson CP. Urology Mythbusters: Introducing a new feature of the journal. J Pediatr Urol. 2017 04; 13(2):122. View abstract
  10. Kurtz MP, Nelson CP. Re: "Sureka SK, Patidar N, Mittal V, Kapoor R, Srivastava A, Kishore K, et al. Safe and optimal pneumoperitoneal pressure for transperitoneal laparoscopic renal surgery in infant less than 10 kg, looked beyond intraoperative period: A prospective randomized study." J Pediatr Urol 2016;12:281.e1-281.e7. J Pediatr Urol. 2017 04; 13(2):236. View abstract
  11. Kurtz MP, Eswara JR, Vetter JM, Nelson CP, Brandes SB. Blunt Abdominal Trauma from Motor Vehicle Collisions from 2007 to 2011: Renal Injury Probability and Severity in Children versus Adults. J Urol. 2017 Mar; 197(3 Pt 2):906-910. View abstract
  12. Colleran GC, Callahan MJ, Paltiel HJ, Nelson CP, Cilento BG, Baum MA, Chow JS. Imaging in the diagnosis of pediatric urolithiasis. Pediatr Radiol. 2017 Jan; 47(1):5-16. View abstract
  13. Tejwani R, Wang HS, Lloyd JC, Kokorowski PJ, Nelson CP, Routh JC. Utility Estimation for Pediatric Vesicoureteral Reflux: Methodological Considerations Using an Online Survey Platform. J Urol. 2017 Mar; 197(3 Pt 1):805-810. View abstract
  14. Schaeffer AJ, Chow JS, Ivanova A, Cui G, Greenfield SP, Zerin JM, Hoberman A, Mathews RI, Mattoo TK, Carpenter MA, Moxey-Mims M, Chesney RW, Nelson CP. Variation in the level of detail in pediatric voiding cystourethrogram reports. J Pediatr Urol. 2017 Jun; 13(3):257-262. View abstract
  15. Schaeffer AJ, Kurtz MP, Logvinenko T, McCartin MT, Prabhu SP, Nelson CP, Chow JS. MRI-based reference range for the renal pelvis anterior-posterior diameter in children ages 0-19 years. Br J Radiol. 2016 Nov; 89(1067):20160211. View abstract
  16. Schaeffer AJ, Greenfield SP, Ivanova A, Cui G, Zerin JM, Chow JS, Hoberman A, Mathews RI, Mattoo TK, Carpenter MA, Moxey-Mims M, Chesney RW, Nelson CP. Reliability of grading of vesicoureteral reflux and other findings on voiding cystourethrography. J Pediatr Urol. 2017 Apr; 13(2):192-198. View abstract
  17. Kurtz MP, Leow JJ, Varda BK, Logvinenko T, Yu RN, Nelson CP, Chung BI, Chang SL. Robotic versus open pediatric ureteral reimplantation: Costs and complications from a nationwide sample. J Pediatr Urol. 2016 Dec; 12(6):408.e1-408.e6. View abstract
  18. Nelson C. Editorial Comment. Urology. 2016 11; 97:192-193. View abstract
  19. Kurtz MP, Leow JJ, Varda BK, Logvinenko T, McQuaid JW, Yu RN, Nelson CP, Chung BI, Chang SL. The Decline of the Open Ureteral Reimplant in the United States: National Data From 2003 to 2013. Urology. 2017 Feb; 100:193-197. View abstract
  20. Assimos D, Krambeck A, Miller NL, Monga M, Murad MH, Nelson CP, Pace KT, Pais VM, Pearle MS, Preminger GM, Razvi H, Shah O, Matlaga BR. Surgical Management of Stones: American Urological Association/Endourological Society Guideline, PART II. J Urol. 2016 Oct; 196(4):1161-9. View abstract
  21. Assimos D, Krambeck A, Miller NL, Monga M, Murad MH, Nelson CP, Pace KT, Pais VM, Pearle MS, Preminger GM, Razvi H, Shah O, Matlaga BR. Surgical Management of Stones: American Urological Association/Endourological Society Guideline, PART I. J Urol. 2016 Oct; 196(4):1153-60. View abstract
  22. Nelson C. Introduction: Population and Health Services Research. J Pediatr Urol. 2016 Jun; 12(3):150. View abstract
  23. Gee HY, Jun I, Braun DA, Lawson JA, Halbritter J, Shril S, Nelson CP, Tan W, Stein D, Wassner AJ, Ferguson MA, Gucev Z, Sayer JA, Milosevic D, Baum M, Tasic V, Lee MG, Hildebrandt F. Mutations in SLC26A1 Cause Nephrolithiasis. Am J Hum Genet. 2016 06 02; 98(6):1228-1234. View abstract
  24. Nelson CP, Hoberman A, Shaikh N, Keren R, Mathews R, Greenfield SP, Mattoo TK, Gotman N, Ivanova A, Moxey-Mims M, Carpenter MA, Chesney RW. Antimicrobial Resistance and Urinary Tract Infection Recurrence. Pediatrics. 2016 Apr; 137(4). View abstract
  25. Nelson C. Population and Health Services Research. J Pediatr Urol. 2015 Dec; 11(6):320. View abstract
  26. Nelson CP, Finkelstein JA, Logvinenko T, Schuster MA. Incidence of Urinary Tract Infection Among Siblings of Children With Vesicoureteral Reflux. Acad Pediatr. 2016 07; 16(5):489-495. View abstract
  27. Varda BK, Johnson EK, Johnson KL, Rosoklija I, Baum MA, Nelson CP. Imaging and surgical utilization for pediatric cystinuria patients: A single-institution cohort study. J Pediatr Urol. 2016 Apr; 12(2):106.e1-7. View abstract
  28. Kurtz MP, McNamara ER, Schaeffer AJ, Logvinenko T, Nelson CP. Association of BMI and pediatric urologic postoperative events: Results from pediatric NSQIP. J Pediatr Urol. 2015 Aug; 11(4):224.e1-6. View abstract
  29. McNamara ER, Kurtz MP, Schaeffer AJ, Logvinenko T, Nelson CP. 30-Day morbidity after augmentation enterocystoplasty and appendicovesicostomy: A NSQIP pediatric analysis. J Pediatr Urol. 2015 Aug; 11(4):209.e1-6. View abstract
  30. McNamara ER, Schaeffer AJ, Logvinenko T, Seager C, Rosoklija I, Nelson CP, Retik AB, Diamond DA, Cendron M. Management of Proximal Hypospadias with 2-Stage Repair: 20-Year Experience. J Urol. 2015 Oct; 194(4):1080-5. View abstract
  31. Nelson CP, Routh JC, Logvinenko T, Rosoklija I, Kokorowski PJ, Prosser LA, Schuster MA. Utility scores for vesicoureteral reflux and anti-reflux surgery. J Pediatr Urol. 2015 Aug; 11(4):177-82. View abstract
  32. Logvinenko T, Chow JS, Nelson CP. Predictive value of specific ultrasound findings when used as a screening test for abnormalities on VCUG. J Pediatr Urol. 2015 Aug; 11(4):176.e1-7. View abstract
  33. Hubert KC, Sideridis G, Sherlock R, Rosoklija I, Kringle G, Johnson K, Bauer SB, Nelson CP. Urinary incontinence in spina bifida: Initial instrument validation. Res Dev Disabil. 2015 May; 40:42-50. View abstract
  34. Kurtz MP, Chow JS, Johnson EK, Rosoklija I, Logvinenko T, Nelson CP. Imaging after urinary tract infection in older children and adolescents. J Urol. 2015 May; 193(5 Suppl):1778-82. View abstract
  35. Nelson C. Population and health services research. J Pediatr Urol. 2014 Aug; 10(4):706. View abstract
  36. Halbritter J, Baum M, Hynes AM, Rice SJ, Thwaites DT, Gucev ZS, Fisher B, Spaneas L, Porath JD, Braun DA, Wassner AJ, Nelson CP, Tasic V, Sayer JA, Hildebrandt F. Fourteen monogenic genes account for 15% of nephrolithiasis/nephrocalcinosis. J Am Soc Nephrol. 2015 Mar; 26(3):543-51. View abstract
  37. Schaeffer AJ, Sood S, Logvinenko T, Rivera-Castro G, Rosoklija I, Chow JS, Nelson CP. Variation in the documentation of findings in pediatric voiding cystourethrogram. Pediatr Radiol. 2014 Dec; 44(12):1548-56. View abstract
  38. Hoberman A, Greenfield SP, Mattoo TK, Keren R, Mathews R, Pohl HG, Kropp BP, Skoog SJ, Nelson CP, Moxey-Mims M, Chesney RW, Carpenter MA. Antimicrobial prophylaxis for children with vesicoureteral reflux. N Engl J Med. 2014 Jun 19; 370(25):2367-76. View abstract
  39. Lloyd JC, Yen T, Pietrobon R, Wiener JS, Ross SS, Kokorowski PJ, Nelson CP, Routh JC. Estimating utility values for vesicoureteral reflux in the general public using an online tool. J Pediatr Urol. 2014 Dec; 10(6):1026-31. View abstract
  40. Johnson EK, Estrada CR, Johnson KL, Nguyen HT, Rosoklija I, Nelson CP. Evaluation of a mobile voiding diary for pediatric patients with voiding dysfunction: a prospective comparative study. J Urol. 2014 Sep; 192(3):908-13. View abstract
  41. Nelson CP, Johnson EK, Logvinenko T, Chow JS. Ultrasound as a screening test for genitourinary anomalies in children with UTI. Pediatrics. 2014 Mar; 133(3):e394-403. View abstract
  42. Johnson EK, Graham DA, Chow JS, Nelson CP. Nationwide emergency department imaging practices for pediatric urolithiasis: room for improvement. J Urol. 2014 Jul; 192(1):200-6. View abstract
  43. Johnson EK, Broder-Fingert S, Tanpowpong P, Bickel J, Lightdale JR, Nelson CP. Use of the i2b2 research query tool to conduct a matched case-control clinical research study: advantages, disadvantages and methodological considerations. BMC Med Res Methodol. 2014 Jan 30; 14:16. View abstract
  44. Nelson C. Population & health services research. J Pediatr Urol. 2013 Dec; 9(6):699. View abstract
  45. Schaeffer AJ, Johnson EK, Logvinenko T, Graham DA, Borer JG, Nelson CP. Practice patterns and resource utilization for infants with bladder exstrophy: a national perspective. J Urol. 2014 May; 191(5):1381-8. View abstract
  46. Varda BK, Johnson EK, Clark C, Chung BI, Nelson CP, Chang SL. National trends of perioperative outcomes and costs for open, laparoscopic and robotic pediatric pyeloplasty. J Urol. 2014 Apr; 191(4):1090-5. View abstract
  47. Hubert KC, Kokorowski PJ, Huang L, Prasad MM, Rosoklija I, Retik AB, Nelson CP. New contralateral vesicoureteral reflux after unilateral ureteral reimplantation: predictive factors and clinical outcomes. J Urol. 2014 Feb; 191(2):451-7. View abstract
  48. Kokorowski PJ, Routh JC, Hubert K, Graham DA, Nelson CP. Trends in revision circumcision at pediatric hospitals. Clin Pediatr (Phila). 2013 Aug; 52(8):699-706. View abstract
  49. Johnson EK, Lightdale JR, Nelson CP. Risk factors for urolithiasis in gastrostomy tube fed children: a case-control study. Pediatrics. 2013 Jul; 132(1):e167-74. View abstract
  50. Lloyd JC, Madden-Fuentes RJ, Nelson CP, Kokorowski PJ, Wiener JS, Ross SS, Kutikov A, Routh JC. The Publication Ranking Score for pediatric urology: quantifying thought leadership within the subspecialty. J Pediatr Urol. 2013 Dec; 9(6 Pt B):1108-1113. View abstract
  51. Johnson EK, Nelson CP. Values and pitfalls of the use of administrative databases for outcomes assessment. J Urol. 2013 Jul; 190(1):17-8. View abstract
  52. Kokorowski PJ, Chow JS, Strauss KJ, Pennison M, Tan W, Cilento B, Nelson CP. Prospective systematic intervention to reduce patient exposure to radiation during pediatric ureteroscopy. J Urol. 2013 Oct; 190(4 Suppl):1474-8. View abstract
  53. Kokorowski PJ, Routh JC, Nelson CP. Quality assessment of economic analyses in pediatric urology. Urology. 2013 Feb; 81(2):263-7. View abstract
  54. Nelson CP. Editorial comment. J Urol. 2013 Apr; 189(4):1529; discussion 1529. View abstract
  55. Johnson EK, Nelson CP. Spontaneous resolution of isolated congenital megacystis: the incredible shrinking bladder. J Pediatr Urol. 2013 Feb; 9(1):e46-50. View abstract
  56. Nelson CP, Chow JS, Rosoklija I, Ziniel S, Routh JC, Cilento BG. Patient and family impact of pediatric genitourinary diagnostic imaging tests. J Urol. 2012 Oct; 188(4 Suppl):1601-7. View abstract
  57. Kokorowski PJ, Routh JC, Hubert KC, Graham DA, Nelson CP. Association of urolithiasis with systemic conditions among pediatric patients at children's hospitals. J Urol. 2012 Oct; 188(4 Suppl):1618-22. View abstract
  58. Hubert KC, Kokorowski PJ, Huang L, Prasad MM, Rosoklija I, Retik AB, Nelson CP. Clinical outcomes and long-term resolution in patients with persistent vesicoureteral reflux after open ureteral reimplantation. J Urol. 2012 Oct; 188(4 Suppl):1474-9. View abstract
  59. Harty NJ, Nelson CP, Cendron M, Turner S, Borer JG. The impact of electrocautery method on post-operative bleeding complications after non-newborn circumcision and revision circumcision. J Pediatr Urol. 2013 Oct; 9(5):634-7. View abstract
  60. Kokorowski PJ, Chow JS, Strauss K, Pennison M, Routh JC, Nelson CP. Prospective measurement of patient exposure to radiation during pediatric ureteroscopy. J Urol. 2012 Apr; 187(4):1408-14. View abstract
  61. Wang HH, Huang L, Routh JC, Nelson CP. Shock wave lithotripsy vs ureteroscopy: variation in surgical management of kidney stones at freestanding children's hospitals. J Urol. 2012 Apr; 187(4):1402-7. View abstract
  62. Nelson CP, Hubert KC, Kokorowski PJ, Huang L, Prasad MM, Rosoklija I, Retik AB. Long-term incidence of urinary tract infection after ureteral reimplantation for primary vesicoureteral reflux. J Pediatr Urol. 2013 Feb; 9(1):92-8. View abstract
  63. Hubert KC, Kokorowski PJ, Huang L, Prasad MM, Rosoklija I, Retik AB, Nelson CP. Durability of antireflux effect of ureteral reimplantation for primary vesicoureteral reflux: findings on long-term cystography. Urology. 2012 Mar; 79(3):675-9. View abstract
  64. Routh JC, Pennison M, Rosoklija I, Dobbins S, Kokorowski PJ, Hubert KC, Huang L, Nelson CP. Racial variation in timing of pyeloplasty: prenatal versus postnatal diagnosis. J Urol. 2011 Dec; 186(6):2386-91. View abstract
  65. Nelson CP, Rosoklija I, Grant R, Retik AB. Development and implementation of a photographic atlas for parental instruction and guidance after outpatient penile surgery. J Pediatr Urol. 2012 Oct; 8(5):521-6. View abstract
  66. Kokorowski PJ, Routh JC, Borer JG, Estrada CR, Bauer SB, Nelson CP. Screening for malignancy after augmentation cystoplasty in children with spina bifida: a decision analysis. J Urol. 2011 Oct; 186(4):1437-43. View abstract
  67. Routh JC, Gong EM, Cannon GM, Nelson CP. Does a controversial topic affect the quality of urologic information on the Internet? Urology. 2011 Nov; 78(5):1051-6. View abstract
  68. Routh JC, Grant FD, Kokorowski PJ, Nelson CP, Fahey FH, Treves ST, Lee RS. Economic and radiation costs of initial imaging approaches after a child's first febrile urinary tract infection. Clin Pediatr (Phila). 2012 Jan; 51(1):23-30. View abstract
  69. Wang HH, Huang L, Routh JC, Kokorowski P, Cilento BG, Nelson CP. Use of the ureteral access sheath during ureteroscopy in children. J Urol. 2011 Oct; 186(4 Suppl):1728-33. View abstract
  70. Routh JC, Graham DA, Estrada CR, Nelson CP. Contemporary use of nephron-sparing surgery for children with malignant renal tumors at freestanding children's hospitals. Urology. 2011 Aug; 78(2):422-6. View abstract
  71. Schaeffer AJ, Stec AA, Purves JT, Cervellione RM, Nelson CP, Gearhart JP. Complete primary repair of bladder exstrophy: a single institution referral experience. J Urol. 2011 Sep; 186(3):1041-6. View abstract
  72. Rangel SJ, Fung M, Graham DA, Ma L, Nelson CP, Sandora TJ. Recent trends in the use of antibiotic prophylaxis in pediatric surgery. J Pediatr Surg. 2011 Feb; 46(2):366-71. View abstract
  73. Routh JC, Nelson CP. Editorial comment. Urology. 2011 Jan; 77(1):199; author reply 199. View abstract
  74. Nelson CP. Editorial comment. J Urol. 2011 Feb; 185(2):680-1; author reply 681. View abstract
  75. Routh JC, Grant FD, Kokorowski P, Lee RS, Fahey FH, Treves ST, Nelson CP. Costs and consequences of universal sibling screening for vesicoureteral reflux: decision analysis. Pediatrics. 2010 Nov; 126(5):865-71. View abstract
  76. Kokorowski PJ, Hubert K, Nelson CP. Evaluation of pediatric nephrolithiasis. Indian J Urol. 2010 Oct; 26(4):531-5. View abstract
  77. Nelson CP. Re: Hsieh MH et al.: Outcomes and cost analysis of pyeloplasty for antenatally diagnosed ureteropelvic junction obstruction using Markov models (Urology 2008;72:794-799). Urology. 2010 Sep; 76(3):769-70; author reply 770. View abstract
  78. Kokorowski PJ, Routh JC, Graham DA, Nelson CP. Variations in timing of surgery among boys who underwent orchidopexy for cryptorchidism. Pediatrics. 2010 Sep; 126(3):e576-82. View abstract
  79. Routh JC, Graham DA, Nelson CP. Trends in imaging and surgical management of pediatric urolithiasis at American pediatric hospitals. J Urol. 2010 Oct; 184(4 Suppl):1816-22. View abstract
  80. Nelson CP. Editorial comment. J Urol. 2010 Oct; 184(4 Suppl):1624. View abstract
  81. Routh JC, Graham DA, Nelson CP. Epidemiological trends in pediatric urolithiasis at United States freestanding pediatric hospitals. J Urol. 2010 Sep; 184(3):1100-4. View abstract
  82. Nelson CP. Extracorporeal shock wave lithotripsy in the pediatric population. Urol Res. 2010 Aug; 38(4):327-31. View abstract
  83. Penna FJ, Nguyen HT, Passerotti CC, Sandy NS, Nelson CP, Diamond DA. The concordance of testicular anatomic location in bilateral cryptorchidism. J Pediatr Urol. 2011 Feb; 7(1):52-6. View abstract
  84. Routh JC, Huang L, Retik AB, Nelson CP. Contemporary epidemiology and characterization of newborn males with prune belly syndrome. Urology. 2010 Jul; 76(1):44-8. View abstract
  85. Copp HL, Nelson CP, Shortliffe LD, Lai J, Saigal CS, Kennedy WA. Compliance with antibiotic prophylaxis in children with vesicoureteral reflux: results from a national pharmacy claims database. J Urol. 2010 May; 183(5):1994-9. View abstract
  86. Routh JC, Gong EM, Cannon GM, Yu RN, Gargollo PC, Nelson CP. Variation among internet based calculators in predicting spontaneous resolution of vesicoureteral reflux. J Urol. 2010 Apr; 183(4):1568-72. View abstract
  87. Routh JC, Nelson CP, Graham DA, Lieu TA. Variation in surgical management of vesicoureteral reflux: influence of hospital and patient factors. Pediatrics. 2010 Mar; 125(3):e446-51. View abstract
  88. Routh JC, Graham DA, Nelson CP. Ketorolac is underutilized after ureteral reimplantation despite reduced hospital cost and reduced length of stay. Urology. 2010 Jul; 76(1):9-13. View abstract
  89. Freilich DA, Penna FJ, Nelson CP, Retik AB, Nguyen HT. Parental satisfaction after open versus robot assisted laparoscopic pyeloplasty: results from modified Glasgow Children's Benefit Inventory Survey. J Urol. 2010 Feb; 183(2):704-8. View abstract
  90. Passerotti C, Chow JS, Silva A, Schoettler CL, Rosoklija I, Perez-Rossello J, Cendron M, Cilento BG, Lee RS, Nelson CP, Estrada CR, Bauer SB, Borer JG, Diamond DA, Retik AB, Nguyen HT. Ultrasound versus computerized tomography for evaluating urolithiasis. J Urol. 2009 Oct; 182(4 Suppl):1829-34. View abstract
  91. Nelson CP. Editorial comment. J Urol. 2009 Oct; 182(4 Suppl):1743. View abstract
  92. Nelson C. Editorial comment. J Urol. 2009 Oct; 182(4 Suppl):1848. View abstract
  93. Estrada CR, Passerotti CC, Graham DA, Peters CA, Bauer SB, Diamond DA, Cilento BG, Borer JG, Cendron M, Nelson CP, Lee RS, Zhou J, Retik AB, Nguyen HT. Nomograms for predicting annual resolution rate of primary vesicoureteral reflux: results from 2,462 children. J Urol. 2009 Oct; 182(4):1535-41. View abstract
  94. Routh JC, Gong EM, Nelson CP. Pediatric urology and the internet--does an uncommon topic decrease content quality? J Urol. 2009 Oct; 182(4):1569-74. View abstract
  95. Nelson CP, Copp HL, Lai J, Saigal CS. Is availability of endoscopy changing initial management of vesicoureteral reflux? J Urol. 2009 Sep; 182(3):1152-7. View abstract
  96. Routh JC, Nelson CP. Re: Evidence-based medicine in urology: Hope and Peril C. Niederberger J Urol 2009; 181: 1528-1529. J Urol. 2009 Sep; 182(3):1236-7; author reply 1237. View abstract
  97. Mandeville JA, Nelson CP. Pediatric urolithiasis. Curr Opin Urol. 2009 Jul; 19(4):419-23. View abstract
  98. C.P. Nelson. RE: Predictive Factors for Contralateral Reflux in Patients With Conservatively Treated Unilateral Vesicoureteral Reflux. J Urolo. 2009; In press. View abstract
  99. Nelson, C.P. RE: INCIDENCE OF POST-PYELONEPHRITIC RENAL SCARRING: A META-ANALYSIS OF DMSA LITERATURE [Editorial Commment]. J Urol. 2009; In Press. View abstract
  100. Nelson CP. Re: Predictive factors for contralateral reflux in patients with conservatively treated unilateral vesicoureteral reflux: U. Barroso, Jr., V. A. Barroso,J. De Bessa, Jr., A. A. Calado and M. Zerati: Filho, J Urol 2008; 180: 297-299. J Urol. 2009 Feb; 181(2):921-2; author reply 922. View abstract
  101. Keren R, Carpenter MA, Hoberman A, Shaikh N, Matoo TK, Chesney RW, Matthews R, Gerson AC, Greenfield SP, Fivush B, McLurie GA, Rushton HG, Canning D, Nelson CP, Greenbaum L, Bukowski T, Primack W, Sutherland R, Hosking J, Stewart D, Elder J, Moxey-Mims M, Nyberg L. Rationale and design issues of the Randomized Intervention for Children With Vesicoureteral Reflux (RIVUR) study. Pediatrics. 2008 Dec; 122 Suppl 5:S240-50. View abstract
  102. Nelson CP, Diamond DA, Cendron M, Peters CA, Cilento BG. Extracorporeal shock wave lithotripsy in pediatric patients using a late generation portable lithotriptor: experience at Children's Hospital Boston. J Urol. 2008 Oct; 180(4 Suppl):1865-8. View abstract
  103. C.P. Nelson. Vesicoueteral Reflux. S. Altschuler et al., editors. emedicine: Textbook of Pediatrics. 2008. View abstract
  104. Caleb P. Nelson. RE: Incidence of Urinary tract infections in children following successful ureteral reimplantation versus endoscopic Deflux implantation. Journal of Urology. 2008; 179:2367. View abstract
  105. Freilich DA, Nguyen HT, Borer J, Nelson C, Passerotti CC. Concurrent management of bilateral ureteropelvic junction obstruction in children using robotic-assisted laparoscopic surgery. Int Braz J Urol. 2008 Mar-Apr; 34(2):198-204; discussion 204-5. View abstract
  106. Nelson CP. The outcome of surgery versus medical management in the treatment of vesicoureteral reflux. Adv Urol. 2008; 437560. View abstract
  107. KK Govindarajan and CP Nelson. Testicular Torsion. M. Cendron et al., editors. emedicine from webMD, available at http://www.emedicine.com/ped/topic 1017689.htm. 2008; in press. View abstract
  108. Caleb P. Nelson. RE: Outcomes and cost analysis of pyeloplasty for antenatally diagnosed ureteropelvic junction obstruction using markov models. Urology. 2008; in press. View abstract
  109. C.P. Nelson and A.B. Retik. What is the current view on circumcision?. Pediatric Views Newsletter. 2008; In Press. View abstract
  110. Nelson, C.P. Optimizing Bladder Exstrophy Outcomes: Should Regionalization of Surgery to Centers of Excellence be the Norm?. Indian Journal of Urology, Richard Grady, MD, Guest Editor. 2008; In Press. View abstract
  111. Nelson CP, North AC, Ward MK, Gearhart JP. Economic impact of failed or delayed primary repair of bladder exstrophy: differences in cost of hospitalization. J Urol. 2008 Feb; 179(2):680-3. View abstract
  112. Nelson, C.P. Reoperative Osteotomy in Exstrophy Surgery. Dialogues in Pediatric Urology, John P. Gearhart, MD, Guest Editor. 2007; 29(2):6. View abstract
  113. Nelson CP, Chow JS. Dextranomer/hyaluronic acid copolymer (Deflux) implants mimicking distal ureteral calculi on CT. Pediatr Radiol. 2008 Jan; 38(1):104-6. View abstract
  114. Barley Cilento, Marc Cendron, David Diamond, and Caleb Nelson. Extracorporeal Shock Wave Lithotripsy in Pediatric Patients Using a Late-Generation Lithotriptor: Experience at Children’s Hospital Boston. World Congress of Endourology, Cancun, Mexico. 2007. View abstract
  115. Amanda North, Caleb P Nelson, John P Gearhart, and Yegappan Lakshmanan, . Patient-reported sexual and reproductive function among adults born with classic bladder exstrophy. Annual Meeting of the Section on Urology of the American Academy of Pediatrics, San Francisco, CA. 2007. View abstract
  116. Nelson, C.P., Park, J.M., Bloom, D.A., Wan, J., Dunn, R.L., and Wei, J.T. Incontinence Symptom Index - Pediatric: Development and Initial Validation of a Urinary Incontinence Instrument for the Older Pediatric Population. Journal of Urology. 2007; 178(4):1763-7. View abstract
  117. Barley Cilento, Marc Cendron, David Diamond, and Caleb Nelson. Extracorporeal Shock Wave Lithotripsy in Pediatric Patients Using a Late-Generation Lithotriptor: Experience at Children’s Hospital Boston. Annual Meeting of the American Academy of Pediatrics, Urology Section, San Francisco, CA. 2007. View abstract
  118. Nelson CP, Park JM, Bloom DA, Wan J, Dunn RL, Wei JT. Incontinence Symptom Index-Pediatric: development and initial validation of a urinary incontinence instrument for the older pediatric population. J Urol. 2007 Oct; 178(4 Pt 2):1763-7; discussion 1767. View abstract
  119. Nelson CP. Evidence of variation by race in the timing of surgery for correction of pediatric ureteropelvic junction obstruction. J Urol. 2007 Oct; 178(4 Pt 1):1463-8; discussion 1468. View abstract
  120. Gearhart JP, Baird A, Nelson CP. Results of bladder neck reconstruction after newborn complete primary repair of exstrophy. J Urol. 2007 Oct; 178(4 Pt 2):1619-22; discussion 1622. View abstract
  121. Nelson, C.P., North, A., Gearhart, J.P., Lakshmanan, Y. Patient-reported urinary function and incontinence among adults born with classic bladder exstrophy. AUA Annual Meeting, Anaheim, CA. 2007. View abstract
  122. Nelson, C.P., North, A., Ward, M.K., and Gearhart, J.P. Economic impact of failed or delayed primary repair of bladder exstrophy: differences in cost of hospitalization. Annual Meeting of the American Urological Association, Anaheim, CA. 2007. View abstract
  123. The Members of the RIVUR Steering Committee. Vesicoureteral Reflux: the RIVUR Study and the Way Forward. J Urol. 2007; 179(2):405--407. View abstract
  124. Nelson, C.P., North, A.C., Ward, M.K. and Gearhart, J.P. Economic impact of failed or delayed primary repair of bladder exstrophy: differences in the cost of hospitalization. Journal of Urology. 2007; 179(2):680-683. View abstract
  125. Baird AD, Nelson CP, Gearhart JP. Modern staged repair of bladder exstrophy: a contemporary series. J Pediatr Urol. 2007 Aug; 3(4):311-5. View abstract
  126. Nelson, C.P., Park, J.M., Wan, J., Kieran, K., Dunn, R.L., and Wei, J.T. Incontinence Symptom Index - Pediatric (ISI-P): Development and Initial Validation of a Urinary Incontinence Instrument for the Pediatric Population. Annual Meeting of the Section on Urology of the American Academy of Pediatrics. 2006. View abstract
  127. Gearhart, J.P., Baird, A., and Nelson, C.P. . Bladder neck reconstruction after newborn complete primary repair of exstrophy. Annual Meeting of the Section on Urology of the American Academy of Pediatrics. 2006. View abstract
  128. Nelson CP. Re: prenatal ultrasound has led to earlier detection and repair of ureteropelvic junction obstruction. J Urol. 2006 Aug; 176(2):840; author reply 840. View abstract
  129. Nelson, C.P. RE: The incidence of testicular germ cell tumors in U.S. children: the SEER program experience 1973-2000. Urology. 2006; 68(2):405. View abstract
  130. Nelson, C.P. RE: Randomized controlled trials in pediatric urology: room for improvement. Journal of Urology. 2006; 176(1):309-310. View abstract
  131. Nelson, C.P. Vesicoureteral Reflux. S. Altschuler et al., editors. emedicine: Textbook of Pediatrics. 2006. View abstract
  132. Kieran K, Nelson CP, Wolf JS. Ureteroscopy for symptomatic hydrocalices: a case series. J Endourol. 2006 Jun; 20(6):413-7. View abstract
  133. Nelson CP, King J, Sponseller PD, Gearhart JP. Repeat pelvic osteotomy in patients with failed closure of bladder exstrophy: applications and outcomes. J Pediatr Surg. 2006 Jun; 41(6):1109-12. View abstract
  134. Kieran, K., Nelson, C.P., Wolf, J.S.,Jr. Ureteroscopy for symptomatic hydrocalices: a case series. AUA Annual Meeting. 2006. View abstract
  135. Nelson, C.P., Gearhart, J.P., Baird, A., and King, J. Thirty year follow-up of a cohort of patients with classic bladder exstrophy: the Johns Hopkins Experience. AUA Annual Meeting. 2006. View abstract
  136. Nelson, C.P. and Gearhart, J.P. Evidence of racial variation in the timing of surgery for correction of ureteropelvic junction obstruction. AUA Annual Meeting. 2006. View abstract
  137. Kieran, K., Nelson, C.P., Wolf, J.S.,Jr., Montie, J.E., Faerber, G.J. Retrograde ureteroscopy in patients with orthotopic ileal neobladder urinary diversion: an update. AUA Annual Meeting. 2006. View abstract
  138. Nelson, C.P. Obstructing Congenital Anomalies of the Urinary Tract: Ureteropelvic Junction Obstruction, Ureterocele, Megaureter, and Posterior Urethral Valves. JK Parsons and EJ Wright, editors. Brady Urology Manual. 2006. View abstract
  139. Nelson, C.P. and Gearhart, J.P. Recent advances in contemporary management of the bladder exstrophy-epispadias complex. Progress in Paediatric Urology. 2006; 8:1-11. View abstract
  140. Nelson CP, Bloom DA, Kinast R, Wei JT, Park JM. Patient-reported sexual function after oral mucosa graft urethroplasty for hypospadias. Urology. 2005 Nov; 66(5):1086-9; discussion 1089-90. View abstract
  141. Nelson CP, Park JM, Wan J, Bloom DA, Dunn RL, Wei JT. The increasing incidence of congenital penile anomalies in the United States. J Urol. 2005 Oct; 174(4 Pt 2):1573-6. View abstract
  142. Nelson CP, Gearhart JP. Re: Continence and classic bladder exstrophy treated with staged repair. J Urol. 2005 Sep; 174(3):1153; author reply 1153-4. View abstract
  143. Nelson CP, Bloom DA, Kinast R, Wei JT, Park JM. Long-term patient reported outcome and satisfaction after oral mucosa graft urethroplasty for hypospadias. J Urol. 2005 Sep; 174(3):1075-8. View abstract
  144. Nelson CP, Dunn RL, Wei JT, Gearhart JP. Surgical repair of bladder exstrophy in the modern era: contemporary practice patterns and the role of hospital case volume. J Urol. 2005 Sep; 174(3):1099-102. View abstract
  145. Nelson CP, Bloom DA, Dunn RL, Wei JT. Bladder exstrophy in the newborn: a snapshot of contemporary practice patterns. Urology. 2005 Aug; 66(2):411-5. View abstract
  146. Mathews R, Nelson CP, Gearhart JP, Vander Kolk CA. Tissue expansion in management of failed phallic reconstruction: initial report of clinical series. Urology. 2005 Jul; 66(1):180-4. View abstract
  147. Nelson, C.P., King, J., Sponseller, P.D., and Gearhart, J.P. . Repeat pelvic osteotomy in patients with prior failed closure of bladder exstrophy: applications and outcomes. AAP Section of Urology-ESPU Joint Meeting. 2005. View abstract
  148. Nelson CP, Dunn RL, Wei JT. Contemporary epidemiology of bladder exstrophy in the United States. J Urol. 2005 May; 173(5):1728-31. View abstract
  149. Mathews, RI, Nelson, C.P., Gearhart, J.P., Vander Kolk, C.A. Tissue Expansion in the Management of Failed Phallic Reconstruction. AUA Annual Meeting. 2005. View abstract
  150. Nelson, C.P., Bloom, D.A., Kinast, R., Wei, J.T., Park, J.M. Patient-reported sexual function after oral mucosa graft urethroplasty for hypospadias. AUA Annual Meeting. 2005. View abstract
  151. Nelson, C.P., Bloom, D.A., Dunn, R.L., Wei, J.T. . Contemporary practice patterns in management of bladder exstrophy in newborns. AUA Annual Meeting. 2005. View abstract
  152. Meldrum KK, Mathews RI, Nelson CP, Gearhart JP. Subspecialty training and surgical outcomes in children with failed bladder exstrophy closure. J Pediatr Urol. 2005 Apr; 1(2):95-9. View abstract
  153. Nelson CP, Dunn R, Wan J, Wei JT. The increasing incidence of newborn circumcision: data from the nationwide inpatient sample. J Urol. 2005 Mar; 173(3):978-81. View abstract
  154. Nelson CP, Park JM, Dunn RL, Wei JT. Contemporary trends in surgical correction of pediatric ureteropelvic junction obstruction: data from the nationwide inpatient sample. J Urol. 2005 Jan; 173(1):232-6. View abstract
  155. Nelson CP, Gearhart JP. Current views on evaluation, management, and gender assignment of the intersex infant. Nat Clin Pract Urol. 2004 Nov; 1(1):38-43. View abstract
  156. Nelson, C.P. and Gearhart, J.P. . Current views on the evaluation, management, and gender assignment of the intersex infant. Nature - Clinical Practice Urology. 2004; 1(1):38-43. View abstract
  157. Nelson, C.P., Park J.M., Bloom, D.A, Wan, J., and Wei, J.T. Is the incidence of congenital penile anomalies increasing?. Annual Meeting of the Section on Urology of the American Academy of Pediatrics. 2004. View abstract
  158. Nelson CP, Ohl DA, Cederna P. Extraordinary scrotal lymphedema after weight loss: resection and reconstruction of the giant end-stage scrotum. Urology. 2004 Jun; 63(6):1180-1. View abstract
  159. Hollenbeck, B.K. and Nelson, C.P. Hypospadias. D.L. Brown and G.H. Borschel, editors. Michigan Manual of Plastic Surgery. 2004. View abstract
  160. Nelson, C.P., Park J.M., H.P. Koo, and Bloom, D.A. . Buccal mucosa graft urethroplasty: a decade of lip service at the University of Michigan. AUA Annual Meeting. 2004. View abstract
  161. Nelson, C.P., Park J.M., J. Wan, Bloom, D.A., and J.T.Wei . The rising rate of newborn circumcision. AUA Annual Meeting. 2004. View abstract
  162. Nelson, C.P., Park J.M., and Bloom, D.A. . Contemporary trends in pediatric pyeloplasty: data from the Nationwide Inpatient Sample. AUA Annual Meeting. 2004. View abstract
  163. Nelson CP. Re: comparative assessment of maximal bladder capacity, 0.9% NaCl versus 0.2 M KCl, for the diagnosis of interstitial cystitis: a prospective controlled study. J Urol. 2004 Apr; 171(4):1635; author reply 1636-7. View abstract
  164. Nelson, C.P., Ohl, D.A., and Cederna, P. . The giant end-stage scrotum: resection and reconstruction. Annual Meeting of the North Central Section of the AUA. 2003. View abstract
  165. Nelson CP, Williams JF, Bloom DA. The cremasteric reflex: a useful but imperfect sign in testicular torsion. J Pediatr Surg. 2003 Aug; 38(8):1248-9. View abstract
  166. Nelson CP, Wolf JS, Montie JE, Faerber GJ. Retrograde ureteroscopy in patients with orthotopic ileal neobladder urinary diversion. J Urol. 2003 Jul; 170(1):107-10. View abstract
  167. Nelson CP, Montie JE, McGuire EJ, Wedemeyer G, Wei JT. Intraoperative nerve stimulation with measurement of urethral sphincter pressure changes during radical retropubic prostatectomy: a feasibility study. J Urol. 2003 Jun; 169(6):2225-8. View abstract
  168. Nelson CP, Dunn RL, Wei JT, Rubin MA, Montie JE, Sanda MG. Contemporary preoperative parameters predict cancer-free survival after radical prostatectomy: a tool to facilitate treatment decisions. Urol Oncol. 2003 May-Jun; 21(3):213-8. View abstract
  169. Nelson CP, Sanda MG. Contemporary diagnosis and management of renal angiomyolipoma. J Urol. 2002 Oct; 168(4 Pt 1):1315-25. View abstract
  170. Olapade-Olaopa EO, Nelson CP, Adebayo SA, Fakolujo AD, Bloom DA. EUTUBS: a mnemonic for the complete endoscopic examination of the lower urinary tract. West Afr J Med. 2002 Oct-Dec; 21(4):294-6. View abstract
  171. Nelson C.P. and Park J.M. . Restoration of external sphincter stability using collagen: a novel treatment for giggle incontinence. American Academy of Pediatrics - Section on Urology Annual Meeting. 2002. View abstract
  172. Nelson, C.P., Wolf, J.S., Jr., and Faerber, G.F. . Retrograde ureteroscopy in patients with orthotopic ileal neobladder urinary diversion. Annual Meeting of the North Central Section of the AUA. 2002. View abstract
  173. Nelson, C.P. and Wolf, J.S., Jr. . Ureteroscopic management of hydrocalyx. Annual Meeting of the North Central Section of the AUA. 2002. View abstract
  174. Nelson CP, Wolf JS. Comparison of hand assisted versus standard laparoscopic radical nephrectomy for suspected renal cell carcinoma. J Urol. 2002 May; 167(5):1989-94. View abstract
  175. Nelson CP, Rubin MA, Strawderman M, Montie JE, Sanda MG. Preoperative parameters for predicting early prostate cancer recurrence after radical prostatectomy. Urology. 2002 May; 59(5):740-5; discussion 745-6. View abstract
  176. Nelson, C.P., Dunn, R., and Sanda, M.G. . Contemporary pre-operative predictors of clinical recurrence and survival after radical prostatectomy in the PSA era. AUA Annual Meeting. 2002. View abstract
  177. Nelson, C.P., Wei, J.T., Wedemeyer, G., Montie, J.E. . Functional intrapelvic neuroanatomy of the male urethral sphincter assessed by intraoperative nerve stimulation. AUA Annual Meeting. 2002. View abstract
  178. Nelson, C.P., Dunn, R., and Sanda, M.G. . Use of baseline clinical parameters to distinguish indolent prostate cancers suitable for observation from cancers warranting primary intervention. AUA Annual Meeting. 2002. View abstract
  179. Nelson CP, Bloom DA. Sales and science: changing patterns of pharmaceutical and medical device advertising in peer reviewed urology publications, 1975-2000. J Urol. 2001 Dec; 166(6):2317-20. View abstract
  180. Nelson WG, De Marzo AM, Deweese TL, Lin X, Brooks JD, Putzi MJ, Nelson CP, Groopman JD, Kensler TW. Preneoplastic prostate lesions: an opportunity for prostate cancer prevention. Ann N Y Acad Sci. 2001 Dec; 952:135-44. View abstract
  181. Parsons JK, Nelson CP, Gage WR, Nelson WG, Kensler TW, De Marzo AM. GSTA1 expression in normal, preneoplastic, and neoplastic human prostate tissue. Prostate. 2001 Sep 15; 49(1):30-7. View abstract
  182. Nelson CP, Francis TA, Wolf JS. Comparison of shockwave lithotripsy outcomes in patients receiving sufentanil or lidocaine spinal anesthesia. J Endourol. 2001 Jun; 15(5):473-7. View abstract
  183. Nelson, C.P., Waterfield, R.T., Platt, J.F., et al. Prediction of spontaneous passage of ureteral calculi using size criteria: z-axis measurements are from reformatted CT images are more accurate than standard axial measurements. AUA Annual Meeting. 2001. View abstract
  184. Nelson, C.P. and Wolf, J.S., Jr. . Comparison of hand-assisted versus standard laparoscopic radical nephrectomy for suspected renal cell carcinoma. AUA Annual Meeting. 2001. View abstract
  185. Nelson, C.P. and Bloom, D.A. . Changing patterns in pharmaceutical and medical device advertising in peer-reviewed urology journals: 1975-2000. AUA Annual Meeting. 2001. View abstract
  186. Nelson CP, Kidd LC, Sauvageot J, Isaacs WB, De Marzo AM, Groopman JD, Nelson WG, Kensler TW. Protection against 2-hydroxyamino-1-methyl-6-phenylimidazo[4,5-b]pyridine cytotoxicity and DNA adduct formation in human prostate by glutathione S-transferase P1. Cancer Res. 2001 Jan 01; 61(1):103-9. View abstract
  187. Sanda, M.G., Wei, J.T., Nelson, C.P., Montie, J.E., Rubin, M.A. . Favorable clinical progression-free survival after radical prostatectomy based on pre-operative parameters: a framework for counselling patients. American Urological Association Annual Meeting. 2000. View abstract
  188. Nelson, C.P. and Koo, H. Vesicoureteral Reflux. S. Altschuler et al, editors. emedicine Textbook of Pediatrics. 2000. View abstract
  189. Nelson, C.P., Embabi, S., Hatchell, D.L. Xenografts of islets of Langerhans in the vitreous cavity. Association for Research in Vision and Ophthalmology Annual Meeting. 1996. View abstract
  190. Craig WY, Poulin SE, Nelson CP, Ritchie RF. ELISA of IgG antibody to oxidized low-density lipoprotein: effects of blocking buffer and method of data expression. Clin Chem. 1994 Jun; 40(6):882-8. View abstract