So, if you know or hear of someone who has had the same type of cancer and treatment as your family member, and that person did not do well, it doesn't mean that your family member isn't going to get well. It is important to remember that each person is different and can react to treatment differently. This is one way to see if a person has cancer. A biopsy also can tell what type of cancer a person has. They crowd out and destroy normal cells the body needs.
Cancer can also spread to other parts of the body.
A diagnosis is based on tests and doctors' experience and knowledge. The study of the blood, the parts of the body where blood is formed, and blood diseases. Cells in the body that protect a person from infection and disease. A thickness or bump under the skin that can be felt by the fingers, either by the person who has it or by a doctor. Lumps can be a sign of cancer, but most lumps are not cancerous.