Endoscopy & biopsy
The intestinal tract includes the esophagus, stomach, small intestine, appendix, colon
, and rectum. Cancer
in each part is diagnosed quite differently, so please try to specify a bit more if you are still curious.
Basically, all can be diagnosed by inserting a flexible camera (endoscope) and taking tissue samples (biopsies). Under the microscope, cancer can be diagnosed.