Research

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Caleb Nelson, MD

Caleb Nelson, MD, MPH
Department:
Urology Research
Hospital Title:
Principal Investigator
Academic Title:
Assistant Professor of Surgery, Harvard Medical School
Research Focus Area:
Vesicoureteral reflux (VUR)Kidney StonesHydronephrosisMedical imaging
Contact:
617-355-3338
Contact Via Email
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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.

Publications

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  1. 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.
  2. 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. 2017 Sep 08.
  3. 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.
  4. Nelson CP. Population and health services. J Pediatr Urol. 2017 06; 13(3):280.
  5. Kurtz MP, Nelson CP. Urology mythbusters: The 5:1 ratio in ureteral reimplantation. J Pediatr Urol. 2017 04; 13(2):187-188.
  6. Kurtz MP, Nelson CP. Urology Mythbusters: Introducing a new feature of the journal. J Pediatr Urol. 2017 04; 13(2):122.
  7. 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.
  8. 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.
  9. 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.
  10. 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.
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  12. 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.
  13. 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.
  14. 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.
  15. 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.
  16. Nelson C. Editorial Comment. Urology. 2016 Nov; 97:192-193.
  17. 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.
  18. 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.
  19. 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.
  20. Nelson C. Introduction: Population and Health Services Research. J Pediatr Urol. 2016 Jun; 12(3):150.
  21. 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 Jun 02; 98(6):1228-1234.
  22. 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).
  23. Nelson C. Population and Health Services Research. J Pediatr Urol. 2015 Dec; 11(6):320.
  24. Nelson CP, Finkelstein JA, Logvinenko T, Schuster MA. Incidence of Urinary Tract Infection Among Siblings of Children With Vesicoureteral Reflux. Acad Pediatr. 2016 Jul; 16(5):489-495.
  25. 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.
  26. 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.
  27. 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.
  28. 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.
  29. 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.
  30. 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.
  31. 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.
  32. 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.
  33. Nelson C. Population and health services research. J Pediatr Urol. 2014 Aug; 10(4):706.
  34. 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.
  35. 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.
  36. 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.
  37. 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.
  38. 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.
  39. 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.
  40. 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.
  41. 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.
  42. Nelson C. Population & health services research. J Pediatr Urol. 2013 Dec; 9(6):699.
  43. 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.
  44. 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.
  45. 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.
  46. 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.
  47. 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.
  48. 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.
  49. Johnson EK, Nelson CP. Values and pitfalls of the use of administrative databases for outcomes assessment. J Urol. 2013 Jul; 190(1):17-8.
  50. 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.
  51. Kokorowski PJ, Routh JC, Nelson CP. Quality assessment of economic analyses in pediatric urology. Urology. 2013 Feb; 81(2):263-7.
  52. Nelson CP. Editorial comment. J Urol. 2013 Apr; 189(4):1529; discussion 1529.
  53. Johnson EK, Nelson CP. Spontaneous resolution of isolated congenital megacystis: the incredible shrinking bladder. J Pediatr Urol. 2013 Feb; 9(1):e46-50.
  54. 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.
  55. 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.
  56. 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.
  57. 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.
  58. 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.
  59. 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.
  60. 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.
  61. 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.
  62. 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.
  63. 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.
  64. 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.
  65. 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.
  66. 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.
  67. 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.
  68. 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.
  69. 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.
  70. 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.
  71. Routh JC, Nelson CP. Editorial comment. Urology. 2011 Jan; 77(1):199; author reply 199.
  72. Nelson CP. Editorial comment. J Urol. 2011 Feb; 185(2):680-1; author reply 681.
  73. 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.
  74. Kokorowski PJ, Hubert K, Nelson CP. Evaluation of pediatric nephrolithiasis. Indian J Urol. 2010 Oct; 26(4):531-5.
  75. 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.
  76. 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.
  77. 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.
  78. Nelson CP. Editorial comment. J Urol. 2010 Oct; 184(4 Suppl):1624.
  79. 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.
  80. Nelson CP. Extracorporeal shock wave lithotripsy in the pediatric population. Urol Res. 2010 Aug; 38(4):327-31.
  81. 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.
  82. 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.
  83. 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.
  84. 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.
  85. 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.
  86. 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.
  87. 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.
  88. 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.
  89. Nelson CP. Editorial comment. J Urol. 2009 Oct; 182(4 Suppl):1743.
  90. Nelson C. Editorial comment. J Urol. 2009 Oct; 182(4 Suppl):1848.
  91. 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.
  92. 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.
  93. 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.
  94. 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.
  95. Mandeville JA, Nelson CP. Pediatric urolithiasis. Curr Opin Urol. 2009 Jul; 19(4):419-23.
  96. C.P. Nelson. RE: Predictive Factors for Contralateral Reflux in Patients With Conservatively Treated Unilateral Vesicoureteral Reflux. J Urolo. 2009; In press.
  97. Nelson, C.P. RE: INCIDENCE OF POST-PYELONEPHRITIC RENAL SCARRING: A META-ANALYSIS OF DMSA LITERATURE [Editorial Commment]. J Urol. 2009; In Press.
  98. 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.
  99. 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.
  100. 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.
  101. C.P. Nelson. Vesicoueteral Reflux. S. Altschuler et al., editors. emedicine: Textbook of Pediatrics. 2008.
  102. 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.
  103. 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.
  104. Nelson CP. The outcome of surgery versus medical management in the treatment of vesicoureteral reflux. Adv Urol. 2008; 437560.
  105. 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.
  106. Caleb P. Nelson. RE: Outcomes and cost analysis of pyeloplasty for antenatally diagnosed ureteropelvic junction obstruction using markov models. Urology. 2008; in press.
  107. C.P. Nelson and A.B. Retik. What is the current view on circumcision?. Pediatric Views Newsletter. 2008; In Press.
  108. 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.
  109. 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.
  110. Nelson, C.P. Reoperative Osteotomy in Exstrophy Surgery. Dialogues in Pediatric Urology, John P. Gearhart, MD, Guest Editor. 2007; 29(2):6.
  111. Nelson CP, Chow JS. Dextranomer/hyaluronic acid copolymer (Deflux) implants mimicking distal ureteral calculi on CT. Pediatr Radiol. 2008 Jan; 38(1):104-6.
  112. 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.
  113. 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.
  114. 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.
  115. 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.
  116. 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.
  117. 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.
  118. 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.
  119. 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.
  120. 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.
  121. The Members of the RIVUR Steering Committee. Vesicoureteral Reflux: the RIVUR Study and the Way Forward. J Urol. 2007; 179(2):405--407.
  122. 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.
  123. Baird AD, Nelson CP, Gearhart JP. Modern staged repair of bladder exstrophy: a contemporary series. J Pediatr Urol. 2007 Aug; 3(4):311-5.
  124. 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.
  125. 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.
  126. 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.
  127. 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.
  128. Nelson, C.P. RE: Randomized controlled trials in pediatric urology: room for improvement. Journal of Urology. 2006; 176(1):309-310.
  129. Nelson, C.P. Vesicoureteral Reflux. S. Altschuler et al., editors. emedicine: Textbook of Pediatrics. 2006.
  130. Kieran K, Nelson CP, Wolf JS. Ureteroscopy for symptomatic hydrocalices: a case series. J Endourol. 2006 Jun; 20(6):413-7.
  131. 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.
  132. Kieran, K., Nelson, C.P., Wolf, J.S.,Jr. Ureteroscopy for symptomatic hydrocalices: a case series. AUA Annual Meeting. 2006.
  133. 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.
  134. 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.
  135. 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.
  136. 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.
  137. 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.
  138. 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.
  139. 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.
  140. 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.
  141. 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.
  142. 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.
  143. 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.
  144. 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.
  145. 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.
  146. Nelson CP, Dunn RL, Wei JT. Contemporary epidemiology of bladder exstrophy in the United States. J Urol. 2005 May; 173(5):1728-31.
  147. 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.
  148. 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.
  149. 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.
  150. 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.
  151. 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.
  152. 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.
  153. 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.
  154. 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.
  155. 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.
  156. 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.
  157. Hollenbeck, B.K. and Nelson, C.P. Hypospadias. D.L. Brown and G.H. Borschel, editors. Michigan Manual of Plastic Surgery. 2004.
  158. 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.
  159. 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.
  160. 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.
  161. 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.
  162. 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.
  163. 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.
  164. 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.
  165. 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.
  166. 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.
  167. Nelson CP, Sanda MG. Contemporary diagnosis and management of renal angiomyolipoma. J Urol. 2002 Oct; 168(4 Pt 1):1315-25.
  168. 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.
  169. 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.
  170. 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.
  171. Nelson, C.P. and Wolf, J.S., Jr. . Ureteroscopic management of hydrocalyx. Annual Meeting of the North Central Section of the AUA. 2002.
  172. 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.
  173. 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.
  174. 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.
  175. 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.
  176. 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.
  177. 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.
  178. 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.
  179. 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.
  180. 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.
  181. 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.
  182. 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.
  183. 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.
  184. 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.
  185. 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.
  186. Nelson, C.P. and Koo, H. Vesicoureteral Reflux. S. Altschuler et al, editors. emedicine Textbook of Pediatrics. 2000.
  187. 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.
  188. 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.
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