Non-muscle invasive bladder cancer risk stratification

Area of Science:

• Urology
• Oncology
• Cancer Research

Background:

• Non-muscle invasive bladder cancer (NMIBC) accounts for 70% of bladder cancer diagnoses.
• High-risk NMIBC requires improved risk stratification and early treatment to prevent progression to muscle-invasive disease.

Purpose of the Study:

• To review prognostic factors and risk prediction models for superficial bladder cancer (NMIBC).
• To identify variables that can predict recurrence and progression in NMIBC patients.

Main Methods:

• A comprehensive Medline search was conducted to identify relevant publications.
• Manuscripts were reviewed to extract prognostic variables for recurrence and progression.

Main Results:

• Tumor grade is the most significant prognostic factor for progression.
• Clinical factors (T category, size, CIS, etc.) and pathological parameters (lamina propria invasion) are important predictors.
• Established models (EORTC, CUETO) tend to overestimate risk and show poor external validation.
• Molecular biomarkers (Ki-67, FGFR3, p53) show promise but require further validation.

Conclusions:

• Existing risk tables (EORTC, CUETO) have limitations in accuracy and discrimination.
• Future research should integrate depth of lamina propria invasion and validated molecular biomarkers into risk assessment tools for enhanced predictive accuracy.