A member asked:

Can macrocytic anemia be due to colon cancer? mcv 103 and hemoglobin 9.8 for old male. i know only microcytic anemia aan be due to colon cancer?

A doctor has provided 1 answer

Yes it depends: You are right that anemia from blood loss like from colon cancer is typically microcytic with a low MCV but the MCV in your case is not high enough to suspect a typical macrocytic anemia like one due to B12 deficiency. Yet we can have a mixed picture. At the moment we are only guessing all this till you have the right investigating/testing done. So i would check your B12 level and bone marrow exam.

Answered 12/18/2020

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