Chest X-ray Survey in Breast Cancer Follow-Up
Author Information
Author(s): S. Ciatto, P. Pacini, C. Andreoli, S. Cecchini, A. Iossa, G. Grazzini, F. Buranelli, T. Campa, A. Costa, A. Magni, M. Pizzichetta
Primary Institution: Centro per lo Studio e la Prevenzione Oncologica
Hypothesis
Does periodic chest X-ray screening improve prognosis in breast cancer patients?
Conclusion
Periodic chest X-ray surveys can detect intrathoracic metastases early, but they do not improve survival rates.
Supporting Evidence
- 56% of intrathoracic metastases were detected in asymptomatic patients.
- The average disease-free interval was shorter for asymptomatic cases compared to symptomatic cases.
- Survival rates at 10 years were similar for both asymptomatic and symptomatic cases.
Takeaway
Doctors used chest X-rays to find cancer spread in breast cancer patients, but finding it early didn't help them live longer.
Methodology
The study reviewed 182 cases of intrathoracic metastases detected through periodic chest X-ray surveys in breast cancer patients.
Potential Biases
Length-biased sampling may have influenced the results, as slower-growing cancers are more likely to be detected asymptomatically.
Limitations
The study did not find a significant survival difference despite early detection, suggesting potential biases in patient selection.
Participant Demographics
Patients aged 26 to 82 years, average age 53.4 years.
Statistical Information
P-Value
p=0.68
Confidence Interval
95% CI for nodal status: 0.99-1.95; for symptoms: 0.61-1.18
Statistical Significance
p<0.001
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