CA19-9 Levels in Colorectal Cancer Detection
Author Information
Author(s): W.M. Thomas, J.F.R. Robertson, M.R. Price, J.D. Hardcastle
Primary Institution: Queen's Medical Centre, Nottingham
Hypothesis
Can serum CA19-9 levels effectively detect asymptomatic colorectal cancer?
Conclusion
CA19-9 is not a reliable screening tool for asymptomatic colorectal cancer.
Supporting Evidence
- CA19-9 levels were significantly higher in patients with liver metastases compared to those with asymptomatic cancer and healthy controls.
- The sensitivity of CA19-9 for detecting asymptomatic cancer was only 17.6%.
- 92.3% of healthy controls had CA19-9 levels below the normal limit.
Takeaway
Doctors checked a blood marker called CA19-9 in people with and without cancer. They found it didn't work well for spotting cancer in people who didn't have symptoms.
Methodology
Serum CA19-9 levels were measured in patients with asymptomatic colorectal cancer, healthy controls, and patients with liver metastases.
Limitations
The study only included patients with positive faecal occult blood tests and may not represent the general population.
Participant Demographics
Patients aged 50-75 years with positive faecal occult blood tests.
Statistical Information
P-Value
<0.001
Statistical Significance
p<0.001
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