R0 resection
Pronunciation: AR-zero rih-SEK-shun
Complete surgical removal of tumor with microscopically negative margins, indicating no residual cancer cells.
Full Definition
R0 resection represents the optimal surgical outcome in oncological procedures, where the entire tumor has been removed with microscopically clear margins. The 'R' stands for residual tumor, and '0' indicates no residual disease. This classification is part of the standardized R-classification system (R0, R1, R2) used to describe the completeness of surgical resection. Achieving R0 resection is associated with improved patient outcomes and reduced risk of local recurrence. The determination is made through careful histopathological examination of the surgical specimen margins.
Usage
Usage note: Always use 'R0' with zero, not letter O. Part of standardized classification system.
In Context
- "The pathology report confirmed R0 resection with all margins clear of malignancy." — Pathology report
- "Patient outcomes significantly improve when R0 resection is achieved in pancreatic cancer surgery." — Clinical research paper