Since the beginning of time, cancer has been well documented as a cause of death to all those that became affected by it. Colorectal cancer is one of the most common reasons for surgery to remove a section of the bowel. Colorectal cancer is a general term that strictly describes cancer affecting the colon or rectum. In this section there are descriptions of cancer that can affect the intestine and the anus. These cancers differ not only according to their location but also according to the type of cell from which the cancer originates.
Cancers can also be categorised by their severity, which is not always dependent on the size of the tumour but also its structure, the manner of growth, as well as its location.
Not all tumours are cancerous. Some benign lumps and abnormalities may remain in situ without threat to health, while others may become pre-cancerous and need removal. This section describes the different reasons as to why some cells become cancerous and how clinical assessment is made to inform clinical decisions on the best course of treatment.
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