tumor-free survival
Duration from surgical treatment until evidence of tumor recurrence or progression is detected.
Full Definition
Tumor-free survival represents the time interval from completion of surgical treatment until radiologic, clinical, or pathologic evidence of cancer recurrence or progression is first documented. This endpoint differs from overall survival as it specifically measures freedom from disease rather than death. Tumor-free survival is a critical outcome measure in oncologic surgery studies and helps assess the effectiveness of surgical interventions. It may also be referred to as recurrence-free survival or disease-free survival in various contexts, though subtle definitional differences exist between these terms.
Usage
Usage note: Distinguish from progression-free survival, which may include stable disease, whereas tumor-free survival requires complete absence of detectable tumor.
In Context
- "The median tumor-free survival was 24 months following curative resection." — Clinical research manuscript
- "Patients with clear surgical margins demonstrated superior tumor-free survival compared to those with positive margins." — Outcomes analysis report