Knowing the tumor stage of colon cancer helps us know the extent of tumor invasion in the body, guides our doctors to choose appropriate examinations, and arranges the best treatment for patients.
First of all, we need to understand that the colon is composed of four parts: the ascending colon, the transverse colon, the descending colon and the sigmoid colon, with a total length of about one meter.
Secondly, you must be familiar with the structure of the colon wall. The colon wall is composed of multiple layers of tissue. Tumors originate from the innermost layer that comes into contact with food.
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