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About Sickkids
About SickKids

Armando Lorenzo, MD, FRCSC, ABU Board Certified

The Hospital for Sick Children

Research Institute
Associate Scientist
Child Health Evaluative Sciences

University of Toronto
Associate Professor
Department of Surgery

Other Positions

Bloorview MacMillan Center

Phone: 416-813-1500, ext. 203109
Fax: 416-813-6461

Brief Biography

  • Attended the University of Panama School Of Medicine and earned his Medical Degree in 1994.
  • Completed Urology Residency at the University of Texas Southwestern Medical School in 2004 in Dallas, Texas.
  • From 2004 until 2006 was a fellow at The Hospital for Sick Children for the Urology Division.
  • Appointed as an Assistant Professor in the Department of Surgery at the University of Toronto and joined the Division of Urology at The Hospital for Sick Children in 2006.
  • Received the American Urological Association Foundation Research Scholarship Award in 2005 under the mentorship of Dr. Darius Bagli.
  • Currently working towards completing a Master Degree in Clinical Epidemiology.

Clinical Activities

Dr. Armando Lorenzo’s clinical practice focuses on all aspects of Pediatric Urology. He has a particular interest in surgical management end-stage renal disease/renal transplantation, laparoscopy and minimal invasive procedures, issues related to future fertility potential in children, and pediatric oncology.

Academic Background

  • Pfizer Scholars in Urology Award
  • Annual Charles J. Robson Research Day, Basic Science Research Project, Second Prize
  • Family Advisory Committee Award

Research Interests

  • Clinical research and outcome analysis
  • Clinical epidemiology
  • Research Activities on hypospadias and varicoceles in children
  • Current Research Projects: Management of Wilms Tumour, Vesicoureteral Reflux, Hypospadias Repair, and use of botulinum toxin in bladder dysfunction

External Funding

  • Canadian Urological Association Scholarship Fund
  • American Urological Association Foundation Research Scholarship Award


Snodgrass WT, Lorenzo AJ: Tubularized incised-plate urethroplast for proximal hypospadias. BJU Int. 2002: 89(1): pp 90-93.

Cook A, Lorenzo AJ, Salle JL, Bakhshi M, Cartwright LM, Bagli D, Farhat W, Khoury AE: Pediatric renal cell carcinoma: single institution 25-year case series and initial experience with partial nephrectomy. Journal of Urology 2006: 175 (4): pp 1456-60.

Lorenzo AJ, Karsli C, Halachmi S, Dolci M, Bissonette B, Farhat W: Hemodynamic cerebrovascular and respiratory effects of pediatric urological retroperitoneal laparoscopic surgery: A prospective study. Journal of Urology 2006: 175(4): pp 1461-5.

Lorenzo AJ, Barroso U, Pippi-Salle JL, Cook A, Grober E, Wallis MC, Bagli DJ, Khoury AE: What are the most powerful determinants endoscopic reflux correction? Multivariate analysis of a single institution experience over 6 years. Journal of Urology 2006: 176: pp 1851-1855.

Braga LH, Lorenzo AJ, Tatsuo ES, Silva IN, Pippi Salle JL: Prospective evaluation of feminizing genitoplasty using partial urogenital sinus mobilizationfor congenital adrenal hyperplasia. Journal of Urology 2006: 176(5): pp 2199-204

Lorenzo, AJ., Chait, PG., Wallis, MC., Raikhlin, A., Farhat, WA: Minimally invasive approach for the management of urinary and fecal incontinence in selected spina bifida patients. Urology 2007: 70 (3): pp 568-571.

Lorenzo, AJ., Wallis, C., Cook, A., Buffett-Fairen,A., Bozic, D., Bagli, SJ., Khoury, AE., Pippi Salle, JL: What is the Variability in Urodynamic Parameters with Position Change in Children? Analysis of a Prospectively Enrolled Cohort. The Journal of Urology 2007: 178(6): pp 2567-70.

Braga, LH., Lorenzo,AJ., Bagli, DJ., Khoury, AE., Pippi Salle, JL: Outcome analysis of isolated male epispadias: single center experience with 33 cases. Journal of Urology 2008: 179(3): pp 1107-12.

Braga, LH., Lorenzo, AJ., Bagli, DJ., Dave, S., Eeg, K., Farhat, WA.,Pippi Salle, JL., Khoury, AE: Ventral penile lengthening versus dorsal plication for severe ventral curvature in children with proximal hypospadias. Journal of Urology 2008: 180(4): pp 1743-47.

Dave, S., Lorenzo, AJ., Khoury, AE., Braga, LH., Skeldon, S., Suoub, M., Farhat, WA., Pippi Salle, JL., Bagli, DJ: Learning from the learning curve: Multivariable analysis of injected volume and other factors associated with successful endoscopic correction of vesicoureteric reflux using dextranomer/ hyaluronic acid copolymer. Journal of Urology 2008: 180(4): pp 1594-9.