Evaluating Lymph Node Counts for Staging Colon Cancer
Author Information
Author(s): Shanmugam Chandrakumar, Hines Robert B, Jhala Nirag C, Katkoori Venkat R, Zhang Bin, Posey James A Jr, Bumpers Harvey L, Grizzle William E, Eltoum Isam E, Siegal Gene P, Manne Upender
Primary Institution: University of Alabama at Birmingham
Hypothesis
What is the minimum number of lymph nodes required for adequate staging of Stage II and III colon cancer?
Conclusion
A minimum of 6 lymph nodes should be examined for adequate staging of Stage II and III colon cancer patients.
Supporting Evidence
- Examination of 12 lymph nodes was not significantly associated with recurrence or mortality.
- Collection of ≥20 lymph nodes was associated with a reduced risk of mortality for Stage II patients.
- Each additional lymph node collected increased the probability of finding a positive lymph node by 19%.
Takeaway
Doctors need to check at least 6 lymph nodes to properly understand how serious colon cancer is, and checking more can help find more problems.
Methodology
The study analyzed 490 patients with Stage II and III colon cancer, categorizing them based on the number of lymph nodes collected during surgery.
Potential Biases
Potential biases in patient selection and treatment received.
Limitations
The study was retrospective and may not account for all variables affecting outcomes.
Participant Demographics
Median age was 68 years, with a mix of non-Hispanic African American and non-Hispanic Caucasian American participants.
Statistical Information
P-Value
p<0.0001
Confidence Interval
95% CI, 0.12-0.91
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website