Colorectal 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.
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.
A diagnosis of colorectal cancer either results from an assessment of a patient presenting with symptoms, or as a result of screening. The disease can be associated with spectrum of symptoms, including blood in stools, change in bowel habits and abdominal pain.