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A 70-year-old male asked:

a friend has been told they have colon cancer, diagnosed via a tumour marker blood test, high cea, ct scan showed contained mass. is this conclusive?

2 doctor answers4 doctors weighed in
Dr. Mark Hoepfner
General Surgery 39 years experience
Biopsy: Biopsy of the mass at colonoscopy is the only conclusive test, but the list of abnormalities identified is strongly concerning for colon cancer. Best wishes.
Dr. Erik Borncamp
Wound care 25 years experience
No, but...: But very suspicious for colon cancer. If your friend is similar in age to yourself a mass in the colon on ct scan is cancer until proven otherwise. And CEA levels can go up for other reasons but, given the mass, they would strongly favor cancer. But to answer your question "no"... They are not definitive. You would need a piece of the mass under a microscope to prove definitively its cancer.

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I am 45 with 3 failed ivfs, 5 yrs ago. Benign ovar. Cyst removed then. Last period jul 10. Hcg 464 (20 dpo) & 843 (22.5 dpo) mild cramp, no bleed, ache 1 side. Ectopic, cancer, menopause?

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Obstetrics and Gynecology 29 years experience
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Last updated Sep 23, 2017
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