Have you ever heard this type of sentence? This conversation persuaded me to write this article. Malignancy is the scientific term used for caner.Most of us knows that a cancer is a rapidly dividing group of cells. But what is the difference between a cancer cell and a normal cell? In a human body normal cells can divide certain number of times and after some time these cells die due to ageing. But the cancer cells are immortal. Cell division is rapid as well as unlimited. So these rapidly dividing malignant cells compete with the normal cells for nutrients and oxygen. Ultimately normal cells die off due to nutrition depletion. Some times these cancer cells obstruct certain passages e.g.: Gastro intestinal tract, blood vessel, bilary tract, urinary tract. This will ultimately lead to death of the person. A brain tumor directly interferes the vital functions of the brain and can lead to death.