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Stage of the cancer — This is the most critical factor. According to the National Cancer Institute*, survival for Stage I colon or rectal cancer is about 93 percent. Survival for Stage II is between 72 and 85 percent and for Stage III, 44 and 83 percent. Chemotherapy may improve prognosis for Stage III cancer. Stage IV cancer has a poor prognosis; about 8 percent are alive at five years.

The number of lymph glands involved — The lymph system is a circulatory system that includes an extensive network of lymph vessels and lymph nodes. The lymphatic system helps coordinate the immune system’s function to protect the body from foreign substances. The more lymph glands that were affected by the cancer, the more likely your cancer will recur. Chemotherapy may be needed in cases where lymph nodes are involved.

If the cancer has spread to other organs — If the colorectal cancer is advanced, it may spread to other organs, such as the liver or lungs. In this case, additional chemotherapy or radiation may be needed to help delay the further spread of the cancer.

Quality of the surgery — This is most important for rectal cancers, where the surgery can be difficult.

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Change in your bowel habits, including diarrhea or constipation or a change in the consistency of your stool.

Rectal bleeding or blood in your stool.

Persistent abdominal discomfort, such as cramps, gas or pain.

A feeling that your bowel doesn't empty completely

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Colon and rectum

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Yes, Colorectal cancer is genitic, and tends to skip a generation. A person with Grandfather/mother who was affected by Colorectal cancer has a 35% chance of obtaining it in their lifetimes

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Cancer begins as a mutation in the dna of a cell. The cell then multiplies and grows; the gene for multiplication is nonexistent or deformed, therefore, the cell has no sense of when to stop dividing. The cells divide until they form a tumor. Ths tumor can be malignant, spread rapidly, or, benign, grows very slowly, or not at all. If its malignant it usually preforms metastasis, it uses the bloodsystem or lymphnodes to circulate around the body. If it's not stopped it will spread until the body is terminated

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It affects the rectum/colon

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It affects the rectum.

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Internal factors are factors that affect the cells from the inside. Oftentimes the cytoplasm detects enzymes that will react with the cell. External factors affecting the cell are any things outside the cell that affect it