Colon Cancer Diagram
Colorectal cancer is cancer that occurs in the colon or rectum. Sometimes it is called colon cancer, for short. As the drawing shows, the colon is the large intestine or large bowel.
How is the stage determined? 1 AJCC Stage. The cancer is in its earliest stage. 2 I. The cancer has grown through the muscularis mucosa into the submucosa (T1),… 3 IIA. The cancer has grown into the outermost layers of the colon or rectum… 4 IIB. The cancer has grown through the wall of the colon or rectum but has not grown…
Pathophysiology of colorectal cancer CRC usually does not produce symptoms in early stages of the disease. If symptoms are present, they usually depend on the site of the primary tumor. Cancers of the proximal colon tend to grow larger before symptoms appear than those in the left colon and rectum.