A 60-Year-Old Man Has Presented to a Clinic and Is

A 60-year-old man has presented to a clinic and is requesting screening for tumor markers after reading about them in a magazine. What can the clinician most accurately tell the man about the clinical use of tumor markers?

A) "Tumor markers are a very useful screening tool, but they only exist for a very few types of cancer."
B) "Tests for the presence of tumor markers are limited by the fact that they are only accurate in the very early stages of cancer."
C) "Tumor markers are an excellent screening tool, but it's only practical to test for those cancers that you're at risk of."
D) "Tumor markers alone aren't enough to confirm whether you have cancer or not, so they're not a very useful screening tool."

Correct Answer:

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