Screen-detected vs clinical breast cancer: the advantage in relative risk of lymph node metastases decreases with increasing tumour size
2005
Lymph Node Status in Screen-Detected Cancers
Sample size: 1842
Editorial
Author Information
Author(s): Duffy S W
Primary Institution: Cancer Research UK Centre for Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine
Hypothesis
The study investigates the interaction between detection mode, tumor size, and lymph node status in breast cancer.
Conclusion
The study concludes that the biological aggressiveness of a breast tumor increases as the tumor develops, particularly during its subclinical phases.
Supporting Evidence
- In screen-detected cases, 14% of small tumors were node positive compared to 29% in clinically detected cases.
- For tumors 18 mm or more, the proportions of node positive tumors were almost equal in both detection modes.
- The odds ratio for node positive disease in clinically detected tumors is 9.6 for larger tumors, while it is 18.9 for screen-detected tumors.
Takeaway
Finding cancer early when it's small can help prevent it from spreading to the lymph nodes, which is important for treatment.
Digital Object Identifier (DOI)
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