[What is the role of active surveillance for small renal masses?]

C Maurin1, F Vidal, E Lechevallier

  • 1Service d'urologie professeur Coulange, centre hospitalo-universitaire de la Conception, Marseille cedex, France. Charlotte.MAURIN@ap-hm.fr

Insights

Watchful waiting is a safe option for small renal masses (SRM), with slow growth and low metastatic risk. Careful patient and tumor selection are key for this less invasive approach.

Area of Science:

  • Urology
  • Oncology

Context:

  • Increasing incidence of small renal masses (SRM) T1a across all age groups.
  • Trend towards less invasive treatments for SRMs based on their characteristics.

Purpose:

  • To summarize current data on the Watchful Waiting (WW) approach for SRMs.
  • To evaluate the efficacy and safety of WW as a therapeutic option.

Summary:

  • Literature review of 58 English and French articles (cohorts, meta-analyses) on WW for SRMs.
  • SRMs exhibit indolent behavior: tumor growth <0.40cm/year, metastatic evolution ~1-2%, 100% disease-free survival.
  • WW is a valid option but requires careful selection of patients (age, comorbidities) and tumors (size, histology).

Impact:

  • Watchful waiting offers a promising, less invasive alternative for selected SRMs.
  • Further large-scale, long-term studies are needed to refine cost and management protocols for WW.

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