These cancers arise from the inner lining of the large intestine, also known as the colon.

But it examines only the lower half of the colon, where most cancers arise, and it must be repeated every five years.

But, he says, the question of how environmentally induced cancers arise is a puzzle that he would like to solve.

Very rarely, cancer can arise in other types of cells in the cervix.

This cancer often arises in the milk glands that line the ducts of the breast.

The comparison indicated that the cancers arose when a small portion of a particular region of chromosome 3 was lost.

Such studies help scientists understand the complex process through which cancers arise and how that process might be stopped.

Scientists are also trying to learn how many other cancers may arise from the genetic defect.

Very rarely, cancer can arise on the section of prolapsed rectal lining.

In pet dogs, as in people, the cancer arises spontaneously and the immune systems are functioning.