It is possible to get bowel cancer two years later even if the colonoscopy was fine two years ago.
As some patients go from benign lesion to malignant to bowel cancer very quickly, it is possible that when the examination was done two years ago, the cancer cells were very few and had not yet broken through the mucosa, so the colonoscopy was normal and the patient would not have symptoms.
However, after two years, the cancer cells are growing exponentially and have the characteristics of infiltration and metastasis, so after two years, when the colonoscopy is done again, there is a possibility that an obvious mass has been formed and has already broken through the intestinal mucosa, so the cancer will be found.
There is no definite way to prevent bowel cancer, but screening can detect polyps and remove them in time, which plays a certain preventive role.
It is recommended to actively cooperate with the treatment if diagnosed with bowel cancer, and at the same time, have three meals a day at regular intervals, chew and swallow slowly when eating, and eat a diet with less residue and high nutrients.