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?

Answer

When cells are populated with cancers cells; they produced certain substances in response to the cancerous growths. These substances are called tumor markers.However these (substances) can also produced by  normal cells in a non- cancerous conditions in response to  other diseases conditions.

The clinician should conclude from above analysis that; ''Therefore, they are not enough  for diagnosis of  cancer  growth to give a positive  or negative confirmation  of tumor. The man should be told that; they are not effective screening tools for cancer''.

They are measured from levels in the blood or urine.

Explanation:

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