Primary percutaneous approach to upper urinary tract transitional cell carcinoma

Area of Science:

• Urology
• Oncology
• Surgical Oncology

Background:

• Upper tract urothelial carcinoma (UTUC) management is evolving.
• Nephroureterectomy, the traditional treatment, may be overtreatment in many cases.
• Current diagnostic methods lack sufficient specificity for optimal treatment decisions.

Purpose of the Study:

• To redefine the optimal approach to upper tract urothelial carcinoma.
• To evaluate the role of endoscopic management versus nephroureterectomy.
• To identify criteria for selecting patients for conservative endoscopic treatment.

Main Methods:

• Ureteroscopy for upper urinary tract assessment and biopsy.
• Percutaneous approach for large or multiple renal pelvis tumors.
• Histopathologic review to guide therapeutic decisions.
• Comparison of outcomes for endoscopic management and nephroureterectomy.

Main Results:

• Superficial UTUC (Grade I/II, Ta/T1) can be treated endoscopically with comparable efficacy to nephroureterectomy.
• Endoscopic treatment is suitable for selected patients, including those with solitary kidneys or high surgical risk.
• Muscle-invasive (T2, T3) and extensive UTUC (T3, T4) warrant immediate nephroureterectomy.
• Percutaneous nephrectomy may be an option for advanced disease to preserve renal function for chemotherapy.

Conclusions:

• Endoscopic management is a viable and less morbid option for low-grade, superficial UTUC.
• Careful patient selection based on tumor grade, stage, and prognostic factors is crucial for successful endoscopic treatment.
• Nephroureterectomy remains indicated for muscle-invasive or advanced UTUC.
• Further research is needed to refine selection criteria and long-term outcomes for endoscopic UTUC management.