Patterns and Predictors of Recurrence after Partial Nephrectomy for Kidney Tumors

Area of Science:

• Urology
• Oncology
• Nephrology

Background:

• Partial nephrectomy is a standard treatment for localized renal cell carcinoma.
• Understanding recurrence patterns is crucial for patient management and prognosis.

Purpose of the Study:

• To identify patterns and predictors of recurrence in patients with localized renal cell carcinoma treated with partial nephrectomy.
• To analyze differences in local versus distant recurrence.

Main Methods:

• Retrospective analysis of 830 partial nephrectomy cases (2007-2015).
• Correlation of patient demographics and pathological characteristics with recurrence and survival using Kaplan-Meier and Cox regression.
• Evaluation of differences in recurrence patterns.

Main Results:

• Higher pT stage, grade, positive margins, and R.E.N.A.L. score were associated with shorter disease-free survival.
• Independent predictors of disease-free survival included pT stage, grade, and R.E.N.A.L. score.
• pT stage and grade predicted metastasis, while R.E.N.A.L. score predicted local recurrence. Local recurrence occurred earlier than metastasis.

Conclusions:

• High pT stage, grade, and R.E.N.A.L. score are significant risk factors for recurrence after partial nephrectomy.
• Metastasis and local recurrence have distinct predictors (stage/grade vs. R.E.N.A.L. score, respectively).
• Future research should consider these distinct patterns and their risk factors separately.