Endourology Research

Minimally-Invasive Upper-Tract Surgery Clinical Research

The U-M Department of Urology Division of Endourology has an active research program into techniques and application of Minimally-Invasive Upper-Tract Surgery. 

  • Ureteroscopy and Percutaneous Intra-Renal Surgery – We have a long-standing prospective database into which all endourologic procedures are entered.  This, combined with the search capabilities of our electronic medical record, provides the clinical substrate for investigations into novel clinical research. 
    • ureteroscopic laser papillotomy for chronic pain associated with papillary calcifications
    • retrograde ureteroscopy for upper tract abnormalities in patients with neobladders
    • assessment of novel nephrolithometry classifications with treatment outcome
    • wire-reinforced ureteral stents to rescue from nephrostomy tube after failure of conventional ureteral stents for extrinsic ureteral obstruction
    • Multiple projects as part of the international Clinical Research Office of the Endourological Society (CROES) registry
    • ureteral stents for impassable ureteroscopy
    • ex vivo ureteroscopy at the time of live donor nephrectomy
    • laparoscopic and robotic upper tract srgery – upper tract laparoscopic and robotic surgery is performed by faculty in the Endourology, Oncology, Pediatric and Neuro-urology Divisions.  Our collaborative approach to clinical care and clinical research has produced several important contributions.
      • predictors of delayed intervention for patients on active surveillance for small renal masses
      • delayed intervention and final pathology in patients with small renal masses
      • immediate intervention versus continued active surveillance of small renal masses
      • comparison of percutaneous renal mass biopsy and R.E.N.A.L. nephrometry score nomograms for determining benign versus malignant disease and low- versus high-risk renal tumors
      • impact of warm versus cold ischemia on renal function following partial nephrectomy
      • the role of tumor enucleation technique in laparoscopic and robotic partial nephrectomy
      • the determinants of renal function after laparoscopic and robotic partial nephrectomy
      • long-term oncologic outcomes after laparoscopic and robotic partial nephrectomy
      • comparison of traditional and microlaparoscopic pyeloplasty
      • outcomes of patients pursuing active surveillance for a small renal mass
      • comparison of laparoscopic and robotic partial nephrectomy
      • physical simulation model for training of laparoscopic pyeloplasty
      • accuracy of determining small renal mass management with risk-stratified biopsies
      • comparison of robotic versus laparoscopic nephroureterectomy
      • long-term outcomes of immediate versus delayed nephroureterectomy for upper tract urothelial carcinoma
      • association of R.E.N.A.L. nephrometry score with outcomes of minimally invasive partial nephrectomy
      • trends in open and minimally invasive pyeloplasties
      • criteria for the surveillance of patients with a small renal mass
      • clinical, pathologic and functional outcomes after nephron-sparing surgery in patients with a solitary kidney
      • laparoscopic triple neurectomy for intractable groin pain
      • SLIP (Small Strategic Laparoscopic Incision Placement) nephrectomy