Related Experiment Videos
A new prognostic staging system for rectal cancer
Hideki Ueno1, Ashley B Price, Kay H Wilkinson
1Department of Surgery I, National Defense Medical College, Japan. ueno@me.ndmc.ac.jp
Annals of Surgery
|October 20, 2004
Summary
Tumor budding, a quantifiable histologic feature, is a reliable predictor of rectal cancer prognosis. Incorporating budding into grading systems improves patient stratification for tailored treatment and follow-up strategies.
Area of Science:
- Oncology
- Pathology
- Surgical Oncology
Background:
- Accurate prognostic prediction is crucial for optimizing postoperative adjuvant therapy and follow-up in rectal cancer patients.
- Existing grading systems may benefit from incorporating additional quantifiable histologic variables.
Purpose of the Study:
- To evaluate the appropriateness of tumor budding as a prognostic parameter for rectal cancer.
- To assess the utility of tumor budding in constructing a new prognostic grading system.
Main Methods:
- Tumor budding was defined and graded based on cell clusters in the invasive frontal region (x250 magnification).
- Two independent cohorts (638 and 476 patients) undergoing potentially curative surgery were analyzed.
- Multivariate analyses were performed to identify independent prognostic factors.
Main Results:
- High-grade tumor budding (≥10 foci/field) was associated with significantly lower 5-year survival rates (41-43%) compared to low-grade budding (83-84%).
- Tumor budding was confirmed as an independent prognosticator alongside nodal involvement and extramural spread.
- A novel grading system incorporating these three variables created 5 prognostic groups with distinct survival outcomes.
Conclusions:
- Tumor budding is a reproducible and prognostically relevant parameter for rectal cancer.
- Budding should be included in grading systems to enhance the prediction of clinical outcomes.
- This approach facilitates more confident prognostic predictions and personalized patient management.