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.