Obstructing tumors of the colon do cause constipation. A negative FIT test doesn't rule out colon cancer. Colonoscopy is the gold standard to do so. My sense is that you don't have colon cancer but have constipation type irritable bowel syndrome. There is medication to treat this, but I recommend a consultation with a gastroenterologist for diagnosis, treatment & follow-up care.
Answered 9/29/2022
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2 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
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